id	sid	eid	entity	type
flr-49	1	1	1	CARDINAL
flr-49	1	2	2013	DATE
flr-49	1	3	81 96	DATE
flr-49	1	4	issn 2295-3159	PERSON
flr-49	1	5	kerry lee	PERSON
flr-49	1	6	national institute of education	ORG
flr-49	1	7	1	CARDINAL
flr-49	1	8	nanyang	GPE
flr-49	1	9	singapore	GPE
flr-49	1	10	637616	DATE
flr-49	4	1	kerry lee	PERSON
flr-49	4	2	kiat hui khng	PERSON
flr-49	4	3	swee fong ng	PERSON
flr-49	4	4	jeremy ng lan kong	PERSON
flr-49	4	5	national institute of education	ORG
flr-49	4	6	nanyang technological university	ORG
flr-49	4	7	singapore	GPE
flr-49	4	8	7	CARDINAL
flr-49	4	9	june 2013	DATE
flr-49	4	10	19 july 2013	DATE
flr-49	4	11	16	CARDINAL
flr-49	4	12	27	CARDINAL
flr-49	4	13	august 2013	DATE
flr-49	4	14	singapore	GPE
flr-49	4	15	algebraic	PERSON
flr-49	8	1	2	CARDINAL
flr-49	8	2	68	CARDINAL
flr-49	8	3	13.9 years	DATE
flr-49	8	4	5	CARDINAL
flr-49	8	5	110	CARDINAL
flr-49	8	6	11.1 years	DATE
flr-49	8	7	algebraic	PERSON
flr-49	10	1	2	CARDINAL
flr-49	13	1	5	CARDINAL
flr-49	16	1	k. lee et al	PERSON
flr-49	18	1	singapore	GPE
flr-49	18	2	martin	PERSON
flr-49	18	3	gonzalez	PERSON
flr-49	18	4	2004	DATE
flr-49	18	5	oecd	ORG
flr-49	18	6	2010	DATE
flr-49	19	1	singapore	GPE
flr-49	19	2	hu	PERSON
flr-49	19	3	2010	DATE
flr-49	20	1	one	CARDINAL
flr-49	20	2	the singapore curriculum	ORG
flr-49	21	1	years	DATE
flr-49	21	2	4	CARDINAL
flr-49	21	3	6	CARDINAL
flr-49	22	1	2000	DATE
flr-49	22	2	2008	DATE
flr-49	23	1	2000	DATE
flr-49	23	2	2006	DATE
flr-49	23	3	ng & lee	ORG
flr-49	23	4	2009	DATE
flr-49	23	5	swafford & langrall	ORG
flr-49	23	6	2000	DATE
flr-49	23	7	warren & cooper	ORG
flr-49	23	8	2005	DATE
flr-49	23	9	warren & cooper	ORG
flr-49	23	10	2009	DATE
flr-49	26	1	2009	DATE
flr-49	26	2	2003	DATE
flr-49	26	3	stacey & macgregor	ORG
flr-49	26	4	1999	DATE
flr-49	26	5	2006	DATE
flr-49	26	6	duru	ORG
flr-49	26	7	2011	DATE
flr-49	26	8	hefferman & koedinger	ORG
flr-49	26	9	1997	DATE
flr-49	26	10	2007	DATE
flr-49	26	11	kieran	PERSON
flr-49	26	12	1981	DATE
flr-49	26	13	knuth	GPE
flr-49	26	14	stephens	GPE
flr-49	26	15	mcneil, & alibali	ORG
flr-49	26	16	2006	DATE
flr-49	26	17	steinberg	GPE
flr-49	26	18	& ktorza	ORG
flr-49	26	19	1991	DATE
flr-49	26	20	küchemann	PERSON
flr-49	26	21	1978	DATE
flr-49	28	1	4	CARDINAL
flr-49	28	2	4	CARDINAL
flr-49	28	3	years old	DATE
flr-49	28	4	singapore	GPE
flr-49	29	1	ng & lee	ORG
flr-49	29	2	2005	DATE
flr-49	31	1	1.1	CARDINAL
flr-49	32	1	three	CARDINAL
flr-49	32	2	ng & lee	ORG
flr-49	32	3	2009	DATE
flr-49	34	1	mary	PERSON
flr-49	34	2	john	PERSON
flr-49	34	3	6	CARDINAL
flr-49	35	1	john	PERSON
flr-49	35	2	2	CARDINAL
flr-49	35	3	mary	PERSON
flr-49	36	1	mary	PERSON
flr-49	37	1	1	CARDINAL
flr-49	38	1	mary	PERSON
flr-49	38	2	john	PERSON
flr-49	39	1	two	CARDINAL
flr-49	39	2	one	CARDINAL
flr-49	40	1	john	PERSON
flr-49	40	2	2	CARDINAL
flr-49	40	3	nathan & koedinger	ORG
flr-49	40	4	2000	DATE
flr-49	41	1	k. lee et al	PERSON
flr-49	42	1	6	CARDINAL
flr-49	42	2	2	CARDINAL
flr-49	42	3	4 2	CARDINAL
flr-49	42	4	4 1	CARDINAL
flr-49	42	5	2	CARDINAL
flr-49	42	6	2	CARDINAL
flr-49	43	1	marbles mary	PERSON
flr-49	43	2	x. john	PERSON
flr-49	43	3	+ 2	CARDINAL
flr-49	45	1	6 2x	CARDINAL
flr-49	45	2	4 x	QUANTITY
flr-49	45	3	2	CARDINAL
flr-49	45	4	2	CARDINAL
flr-49	46	1	1	CARDINAL
flr-49	46	2	mary	PERSON
flr-49	46	3	john	PERSON
flr-49	46	4	6	CARDINAL
flr-49	47	1	john	PERSON
flr-49	47	2	2	CARDINAL
flr-49	47	3	mary	PERSON
flr-49	48	1	mary	PERSON
flr-49	49	1	2	CARDINAL
flr-49	50	1	6	CARDINAL
flr-49	54	1	two	CARDINAL
flr-49	62	1	khng & lee	ORG
flr-49	62	2	2009	DATE
flr-49	63	1	two	CARDINAL
flr-49	63	2	2011	DATE
flr-49	63	3	lim	ORG
flr-49	63	4	2007	DATE
flr-49	64	1	singapore	GPE
flr-49	66	1	two	CARDINAL
flr-49	66	2	lee	PERSON
flr-49	66	3	two	CARDINAL
flr-49	66	4	lee et al.	PERSON
flr-49	66	5	2007	DATE
flr-49	66	6	lee et al.	PERSON
flr-49	66	7	2010	DATE
flr-49	67	1	two	CARDINAL
flr-49	70	1	k. lee et al	PERSON
flr-49	70	2	84	CARDINAL
flr-49	71	1	1.2	CARDINAL
flr-49	71	2	fuchs et al.	ORG
flr-49	71	3	2012	DATE
flr-49	71	4	lee	PERSON
flr-49	71	5	2011	DATE
flr-49	71	6	tolar	PERSON
flr-49	71	7	lederberg, & fletcher	ORG
flr-49	71	8	2009	DATE
flr-49	71	9	wei, yuan	ORG
flr-49	71	10	chen, & zhou	ORG
flr-49	71	11	2012	DATE
flr-49	72	1	mayer, 1989, 2002	ORG
flr-49	72	2	meter & garner	ORG
flr-49	72	3	2005	DATE
flr-49	75	1	6	CARDINAL
flr-49	75	2	koedinger & terao	ORG
flr-49	75	3	2002	DATE
flr-49	76	1	booth & koedinger	ORG
flr-49	76	2	2010	DATE
flr-49	78	1	one	CARDINAL
flr-49	80	1	ten	CARDINAL
flr-49	80	2	ten	CARDINAL
flr-49	81	1	ng & lee	ORG
flr-49	81	2	2009	DATE
flr-49	83	1	more than two	CARDINAL
flr-49	85	1	algebraic	PERSON
flr-49	87	1	one	CARDINAL
flr-49	88	1	dede	ORG
flr-49	88	2	2004	DATE
flr-49	90	1	usiskin	PERSON
flr-49	90	2	1988	DATE
flr-49	92	1	47	DATE
flr-49	92	2	+ 13	DATE
flr-49	93	1	dede	ORG
flr-49	93	2	2004	DATE
flr-49	93	3	one	CARDINAL
flr-49	94	1	algebraic	PERSON
flr-49	94	2	3x	CARDINAL
flr-49	94	3	philipp	ORG
flr-49	94	4	1992	DATE
flr-49	95	1	2006	DATE
flr-49	97	1	2 + x	QUANTITY
flr-49	98	1	kuchëmann	PERSON
flr-49	98	2	1978	DATE
flr-49	98	3	macgregor & stacey	ORG
flr-49	98	4	1997	DATE
flr-49	98	5	3p	CARDINAL
flr-49	101	1	k. lee et al	PERSON
flr-49	102	1	1.3	CARDINAL
flr-49	104	1	two	CARDINAL
flr-49	105	1	algebraic	PERSON
flr-49	114	1	5	CARDINAL
flr-49	114	2	5	CARDINAL
flr-49	114	3	2	CARDINAL
flr-49	114	4	8)	CARDINAL
flr-49	115	1	a year	DATE
flr-49	115	2	6	CARDINAL
flr-49	116	1	ten	CARDINAL
flr-49	116	2	5	CARDINAL
flr-49	116	3	ng & lee, 2008	ORG
flr-49	118	1	algebraic	PERSON
flr-49	119	1	algebraic	PERSON
flr-49	119	2	1985	DATE
flr-49	122	1	2	CARDINAL
flr-49	122	2	2.1	CARDINAL
flr-49	122	3	4	CARDINAL
flr-49	122	4	one	CARDINAL
flr-49	122	5	tens, hundreds	CARDINAL
flr-49	122	6	thousands	CARDINAL
flr-49	122	7	× 2	ORG
flr-49	122	8	5	CARDINAL
flr-49	122	9	2	CARDINAL
flr-49	124	1	68	CARDINAL
flr-49	124	2	2	CARDINAL
flr-49	124	3	13.9	CARDINAL
flr-49	124	4	0.45	CARDINAL
flr-49	124	5	110	CARDINAL
flr-49	124	6	5	CARDINAL
flr-49	124	7	11.1	CARDINAL
flr-49	124	8	0.60	CARDINAL
flr-49	124	9	5	CARDINAL
flr-49	124	10	2	CARDINAL
flr-49	124	11	3	CARDINAL
flr-49	125	1	singapore	GPE
flr-49	127	1	2.2	CARDINAL
flr-49	129	1	2	CARDINAL
flr-49	129	2	1985	DATE
flr-49	130	1	k. lee et al	PERSON
flr-49	131	1	2.2.1	CARDINAL
flr-49	134	1	one	CARDINAL
flr-49	137	1	12	CARDINAL
flr-49	138	1	mary versus jane	PERSON
flr-49	139	1	four	CARDINAL
flr-49	139	2	tens, hundreds	CARDINAL
flr-49	139	3	thousands	CARDINAL
flr-49	140	1	three	CARDINAL
flr-49	141	1	three	CARDINAL
flr-49	141	2	one	CARDINAL
flr-49	142	1	1a	CARDINAL
flr-49	142	2	2	CARDINAL
flr-49	143	1	7	CARDINAL
flr-49	143	2	mary	PERSON
flr-49	143	3	john	PERSON
flr-49	143	4	9	CARDINAL
flr-49	144	1	john	PERSON
flr-49	144	2	7	CARDINAL
flr-49	144	3	mary	PERSON
flr-49	144	4	70	CARDINAL
flr-49	144	5	tens	CARDINAL
flr-49	144	6	john	PERSON
flr-49	144	7	70	CARDINAL
flr-49	144	8	mary	PERSON
flr-49	144	9	two	CARDINAL
flr-49	147	1	two	CARDINAL
flr-49	147	2	1a	CARDINAL
flr-49	149	1	john	PERSON
flr-49	149	2	70	CARDINAL
flr-49	149	3	john	PERSON
flr-49	149	4	7	CARDINAL
flr-49	151	1	1	CARDINAL
flr-49	152	1	2.2.2	CARDINAL
flr-49	152	2	two	CARDINAL
flr-49	152	3	3	CARDINAL
flr-49	153	1	first	ORDINAL
flr-49	153	2	two	CARDINAL
flr-49	154	1	one	CARDINAL
flr-49	157	1	one	CARDINAL
flr-49	158	1	four	CARDINAL
flr-49	159	1	second	ORDINAL
flr-49	159	2	two	CARDINAL
flr-49	159	3	two	CARDINAL
flr-49	160	1	two	CARDINAL
flr-49	163	1	two	CARDINAL
flr-49	164	1	9 marks	MONEY
flr-49	165	1	k. lee et al	PERSON
flr-49	166	1	2.2.3 küchemann	QUANTITY
flr-49	166	2	the chelsea diagnostic	ORG
flr-49	166	3	1985	DATE
flr-49	167	1	up to six	CARDINAL
flr-49	168	1	one	CARDINAL
flr-49	168	2	four	CARDINAL
flr-49	169	1	first	ORDINAL
flr-49	169	2	three	CARDINAL
flr-49	169	3	1	CARDINAL
flr-49	170	1	2	CARDINAL
flr-49	170	2	3	CARDINAL
flr-49	172	1	4	CARDINAL
flr-49	173	1	2	CARDINAL
flr-49	173	2	küchemann	PERSON
flr-49	174	1	küchemann	PERSON
flr-49	175	1	2.3	CARDINAL
flr-49	176	1	2	CARDINAL
flr-49	177	1	3	CARDINAL
flr-49	177	2	4	CARDINAL
flr-49	177	3	tens, hundreds	CARDINAL
flr-49	177	4	thousands	CARDINAL
flr-49	177	5	× 2	ORG
flr-49	177	6	5	CARDINAL
flr-49	177	7	2	CARDINAL
flr-49	179	1	two	CARDINAL
flr-49	179	2	two	CARDINAL
flr-49	180	1	1	CARDINAL
flr-49	181	1	k. lee et al	PERSON
flr-49	182	1	1	CARDINAL
flr-49	182	2	95%	PERCENT
flr-49	182	3	ci m	PERSON
flr-49	182	4	95%	PERCENT
flr-49	182	5	ci m	PERSON
flr-49	182	6	95%	PERCENT
flr-49	182	7	5	CARDINAL
flr-49	182	8	33	CARDINAL
flr-49	182	9	19	CARDINAL
flr-49	183	1	28	CARDINAL
flr-49	183	2	38	DATE
flr-49	183	3	51	CARDINAL
flr-49	183	4	29	CARDINAL
flr-49	184	1	43	CARDINAL
flr-49	184	2	59	CARDINAL
flr-49	184	3	111	CARDINAL
flr-49	184	4	56	CARDINAL
flr-49	185	1	95	CARDINAL
flr-49	185	2	127	CARDINAL
flr-49	185	3	tens 44	DATE
flr-49	185	4	25	CARDINAL
flr-49	186	1	38	CARDINAL
flr-49	186	2	51	DATE
flr-49	186	3	57	CARDINAL
flr-49	186	4	29	CARDINAL
flr-49	187	1	49	CARDINAL
flr-49	187	2	65	CARDINAL
flr-49	187	3	116	CARDINAL
flr-49	187	4	59	CARDINAL
flr-49	188	1	100	CARDINAL
flr-49	188	2	132	CARDINAL
flr-49	188	3	hundreds 50	CARDINAL
flr-49	188	4	28	CARDINAL
flr-49	189	1	42	CARDINAL
flr-49	189	2	57	DATE
flr-49	189	3	60	CARDINAL
flr-49	189	4	28	CARDINAL
flr-49	190	1	52	CARDINAL
flr-49	190	2	68	CARDINAL
flr-49	190	3	122	CARDINAL
flr-49	190	4	68	CARDINAL
flr-49	191	1	103	CARDINAL
flr-49	191	2	140	CARDINAL
flr-49	191	3	thousands 54	CARDINAL
flr-49	191	4	35	CARDINAL
flr-49	191	5	44	CARDINAL
flr-49	191	6	63	DATE
flr-49	191	7	59	CARDINAL
flr-49	191	8	27	CARDINAL
flr-49	192	1	52	CARDINAL
flr-49	192	2	66	CARDINAL
flr-49	192	3	106	CARDINAL
flr-49	192	4	62	CARDINAL
flr-49	193	1	89	CARDINAL
flr-49	193	2	123	CARDINAL
flr-49	193	3	35	CARDINAL
flr-49	193	4	22	CARDINAL
flr-49	194	1	29	CARDINAL
flr-49	194	2	41	CARDINAL
flr-49	194	3	53	CARDINAL
flr-49	194	4	34	CARDINAL
flr-49	195	1	44	CARDINAL
flr-49	195	2	62	DATE
flr-49	195	3	74	CARDINAL
flr-49	195	4	54	DATE
flr-49	196	1	59	CARDINAL
flr-49	196	2	88	CARDINAL
flr-49	196	3	tens 39	CARDINAL
flr-49	196	4	22	CARDINAL
flr-49	197	1	33	CARDINAL
flr-49	197	2	46	DATE
flr-49	197	3	54	CARDINAL
flr-49	197	4	26	CARDINAL
flr-49	198	1	47	CARDINAL
flr-49	198	2	61	DATE
flr-49	198	3	104	CARDINAL
flr-49	198	4	53	CARDINAL
flr-49	199	1	89	CARDINAL
flr-49	199	2	118	CARDINAL
flr-49	199	3	hundreds	CARDINAL
flr-49	199	4	48	DATE
flr-49	199	5	26	CARDINAL
flr-49	200	1	41	CARDINAL
flr-49	200	2	55	DATE
flr-49	200	3	54	CARDINAL
flr-49	200	4	23	CARDINAL
flr-49	201	1	48	CARDINAL
flr-49	201	2	61	DATE
flr-49	201	3	101	CARDINAL
flr-49	201	4	77	CARDINAL
flr-49	202	1	80	CARDINAL
flr-49	202	2	122	CARDINAL
flr-49	202	3	thousands 59	CARDINAL
flr-49	202	4	37	CARDINAL
flr-49	203	1	49	CARDINAL
flr-49	203	2	69	CARDINAL
flr-49	203	3	65	CARDINAL
flr-49	203	4	35	CARDINAL
flr-49	204	1	55	CARDINAL
flr-49	204	2	74	CARDINAL
flr-49	204	3	123	CARDINAL
flr-49	204	4	63	CARDINAL
flr-49	205	1	106	CARDINAL
flr-49	205	2	140	CARDINAL
flr-49	205	3	2	CARDINAL
flr-49	205	4	36	CARDINAL
flr-49	205	5	16	CARDINAL
flr-49	206	1	31	CARDINAL
flr-49	206	2	42	CARDINAL
flr-49	206	3	59	CARDINAL
flr-49	206	4	26	CARDINAL
flr-49	207	1	50	CARDINAL
flr-49	207	2	67	CARDINAL
flr-49	207	3	133	CARDINAL
flr-49	207	4	57	CARDINAL
flr-49	208	1	114	CARDINAL
flr-49	208	2	153	CARDINAL
flr-49	208	3	tens 47	CARDINAL
flr-49	208	4	28	CARDINAL
flr-49	208	5	38	CARDINAL
flr-49	208	6	56	CARDINAL
flr-49	208	7	61	CARDINAL
flr-49	208	8	25	CARDINAL
flr-49	209	1	53	CARDINAL
flr-49	209	2	70	DATE
flr-49	209	3	124	CARDINAL
flr-49	209	4	51	CARDINAL
flr-49	210	1	106	CARDINAL
flr-49	210	2	142	CARDINAL
flr-49	210	3	hundreds	CARDINAL
flr-49	210	4	29	CARDINAL
flr-49	211	1	43	CARDINAL
flr-49	211	2	63	DATE
flr-49	211	3	69	CARDINAL
flr-49	211	4	30	CARDINAL
flr-49	212	1	58	CARDINAL
flr-49	212	2	79	CARDINAL
flr-49	212	3	121	CARDINAL
flr-49	212	4	53	CARDINAL
flr-49	213	1	103	CARDINAL
flr-49	213	2	138	CARDINAL
flr-49	213	3	thousands 59	CARDINAL
flr-49	213	4	32	CARDINAL
flr-49	214	1	48	CARDINAL
flr-49	214	2	70	DATE
flr-49	214	3	74	CARDINAL
flr-49	214	4	29	CARDINAL
flr-49	215	1	64	CARDINAL
flr-49	215	2	84	CARDINAL
flr-49	215	3	125	CARDINAL
flr-49	215	4	48	CARDINAL
flr-49	216	1	109	CARDINAL
flr-49	216	2	141	CARDINAL
flr-49	216	3	36	CARDINAL
flr-49	216	4	18	CARDINAL
flr-49	217	1	30	CARDINAL
flr-49	217	2	59	CARDINAL
flr-49	217	3	29	CARDINAL
flr-49	218	1	49	CARDINAL
flr-49	218	2	70	CARDINAL
flr-49	218	3	111	CARDINAL
flr-49	218	4	70	CARDINAL
flr-49	219	1	85	CARDINAL
flr-49	219	2	136] tens 52	MONEY
flr-49	219	3	25	CARDINAL
flr-49	220	1	43	CARDINAL
flr-49	220	2	65	CARDINAL
flr-49	220	3	25	CARDINAL
flr-49	221	1	56	CARDINAL
flr-49	221	2	74	CARDINAL
flr-49	221	3	138	CARDINAL
flr-49	221	4	73	CARDINAL
flr-49	222	1	111	CARDINAL
flr-49	222	2	164	CARDINAL
flr-49	222	3	hundreds	CARDINAL
flr-49	222	4	53	DATE
flr-49	222	5	24	CARDINAL
flr-49	222	6	45	CARDINAL
flr-49	222	7	62	DATE
flr-49	222	8	72	CARDINAL
flr-49	222	9	27	CARDINAL
flr-49	223	1	62	CARDINAL
flr-49	223	2	82	CARDINAL
flr-49	223	3	134	CARDINAL
flr-49	223	4	84	CARDINAL
flr-49	224	1	103	CARDINAL
flr-49	224	2	164	CARDINAL
flr-49	224	3	thousands 70	CARDINAL
flr-49	224	4	38	CARDINAL
flr-49	224	5	56	CARDINAL
flr-49	224	6	84	CARDINAL
flr-49	224	7	81	CARDINAL
flr-49	224	8	39	CARDINAL
flr-49	225	1	67	CARDINAL
flr-49	225	2	95	CARDINAL
flr-49	225	3	150	CARDINAL
flr-49	225	4	71	CARDINAL
flr-49	226	1	125	CARDINAL
flr-49	226	2	176	CARDINAL
flr-49	227	1	1	CARDINAL
flr-49	228	1	2.	PERCENT
flr-49	228	2	95%	PERCENT
flr-49	228	3	95%	PERCENT
flr-49	231	1	3	CARDINAL
flr-49	231	2	95%	PERCENT
flr-49	232	1	4	CARDINAL
flr-49	232	2	5	CARDINAL
flr-49	232	3	356	CARDINAL
flr-49	233	1	150	CARDINAL
flr-49	233	2	12.85	CARDINAL
flr-49	233	3	.001	CARDINAL
flr-49	233	4	2	CARDINAL
flr-49	234	1	1	CARDINAL
flr-49	234	2	2	CARDINAL
flr-49	235	1	150	CARDINAL
flr-49	236	1	4.13	CARDINAL
flr-49	236	2	2	CARDINAL
flr-49	238	1	four	CARDINAL
flr-49	238	2	.39	GPE
flr-49	238	3	2	CARDINAL
flr-49	240	1	four	CARDINAL
flr-49	240	2	f(1	PERSON
flr-49	240	3	80	DATE
flr-49	241	1	61.93	CARDINAL
flr-49	241	2	2	CARDINAL
flr-49	242	1	four	CARDINAL
flr-49	242	2	2	CARDINAL
flr-49	243	1	k. lee et al	PERSON
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flr-49	245	3	4.05	CARDINAL
flr-49	245	4	2	CARDINAL
flr-49	246	1	secondary	ORDINAL
flr-49	246	2	2	CARDINAL
flr-49	247	1	only 2	CARDINAL
flr-49	247	2	1	CARDINAL
flr-49	247	3	1	CARDINAL
flr-49	247	4	2	CARDINAL
flr-49	248	1	approximately 22%	PERCENT
flr-49	248	2	1	CARDINAL
flr-49	248	3	2, 40%	PERCENT
flr-49	248	4	3	CARDINAL
flr-49	248	5	38%	PERCENT
flr-49	248	6	4	CARDINAL
flr-49	249	1	4	CARDINAL
flr-49	249	2	tens, hundreds	CARDINAL
flr-49	249	3	thousands	CARDINAL
flr-49	249	4	1	CARDINAL
flr-49	249	5	2	CARDINAL
flr-49	249	6	3	CARDINAL
flr-49	249	7	4	CARDINAL
flr-49	249	8	algebraic	PERSON
flr-49	250	1	algebraic	PERSON
flr-49	251	1	62%	PERCENT
flr-49	251	2	nine marks	MONEY
flr-49	253	1	2	CARDINAL
flr-49	256	1	four	CARDINAL
flr-49	256	2	two	CARDINAL
flr-49	258	1	0.26	CARDINAL
flr-49	258	2	.007	CARDINAL
flr-49	259	1	5	CARDINAL
flr-49	260	1	4	CARDINAL
flr-49	262	1	k. lee et al	PERSON
flr-49	263	1	90	CARDINAL
flr-49	268	1	more than half	CARDINAL
flr-49	275	1	1970	DATE
flr-49	275	2	harnishfeger & bjorklund,	ORG
flr-49	275	3	1990	DATE
flr-49	285	1	one	CARDINAL
flr-49	287	1	lee	PERSON
flr-49	287	2	2006	DATE
flr-49	289	1	küchemann	PERSON
flr-49	290	1	one	CARDINAL
flr-49	290	2	two	CARDINAL
flr-49	291	1	alibali, & nathan	ORG
flr-49	291	2	2008	DATE
flr-49	291	3	koedinger & nathan	ORG
flr-49	291	4	2004	DATE
flr-49	292	1	2	CARDINAL
flr-49	293	1	one	CARDINAL
flr-49	293	2	küchemann	PERSON
flr-49	294	1	küchemann	PERSON
flr-49	295	1	algebraic	PERSON
flr-49	296	1	k. lee et al	PERSON
flr-49	296	2	91	CARDINAL
flr-49	297	1	one	CARDINAL
flr-49	298	1	two	CARDINAL
flr-49	298	2	algebraic	PERSON
flr-49	300	1	5	CARDINAL
flr-49	300	2	algebraic	PERSON
flr-49	307	1	küchemann	PERSON
flr-49	315	1	algebraic	PERSON
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flr-49	317	1	5	CARDINAL
flr-49	317	2	8	CARDINAL
flr-49	320	1	k. lee et al	PERSON
flr-49	323	1	#crp 9/05	MONEY
flr-49	324	1	the national institute of education	ORG
flr-49	324	2	singapore	GPE
flr-49	330	1	mary	PERSON
flr-49	331	1	john	PERSON
flr-49	331	2	30	CARDINAL
flr-49	331	3	mary	PERSON
flr-49	332	1	150	CARDINAL
flr-49	333	1	mary	PERSON
flr-49	344	1	one	CARDINAL
flr-49	345	1	one	CARDINAL
flr-49	346	1	k. lee et al	PERSON
flr-49	348	1	2	CARDINAL
flr-49	351	1	john	PERSON
flr-49	351	2	30	CARDINAL
flr-49	351	3	mary	PERSON
flr-49	352	1	150	CARDINAL
flr-49	353	1	mary	PERSON
flr-49	354	1	mary	PERSON
flr-49	355	1	john	PERSON
flr-49	355	2	300 marbles	QUANTITY
flr-49	355	3	mary	PERSON
flr-49	356	1	1500	CARDINAL
flr-49	357	1	mary	PERSON
flr-49	358	1	one	CARDINAL
flr-49	359	1	l., & özdemir	ORG
flr-49	359	2	m. e. (	PERSON
flr-49	359	3	2006	DATE
flr-49	361	1	9(1	CARDINAL
flr-49	361	2	45	CARDINAL
flr-49	365	1	k. lee et al	PERSON
flr-49	366	1	j. l.	PERSON
flr-49	366	2	k. r.	PERSON
flr-49	366	3	2010	DATE
flr-49	368	1	s. ohlsson & r. catrambone	ORG
flr-49	368	2	32nd	ORDINAL
flr-49	368	3	annual	DATE
flr-49	368	4	1649-1654	CARDINAL
flr-49	369	1	austin	PERSON
flr-49	369	2	tx	ORG
flr-49	370	1	m., hart	ORG
flr-49	370	2	k., & kuchemann	ORG
flr-49	370	3	1985	DATE
flr-49	371	1	chelsea	PERSON
flr-49	372	1	windsor	PERSON
flr-49	372	2	nfer-nelson	PERSON
flr-49	372	3	capraro	ORG
flr-49	372	4	m. m.	PERSON
flr-49	372	5	2006	DATE
flr-49	373	1	algebraic	PERSON
flr-49	374	1	27(2	CARDINAL
flr-49	374	2	147	CARDINAL
flr-49	375	1	10.1080/02702710600642467	CARDINAL
flr-49	375	2	t. p., & levi	ORG
flr-49	375	3	l.	PERSON
flr-49	375	4	2000	DATE
flr-49	376	1	algebraic	PERSON
flr-49	377	1	00-2	CARDINAL
flr-49	378	1	madison	PERSON
flr-49	378	2	wi	GPE
flr-49	379	1	d. w.	PERSON
flr-49	379	2	brizuela	PERSON
flr-49	379	3	b. m.	PERSON
flr-49	379	4	2006	DATE
flr-49	381	1	87	CARDINAL
flr-49	382	1	dede	ORG
flr-49	382	2	2004	DATE
flr-49	384	1	4(1	CARDINAL
flr-49	384	2	50	CARDINAL
flr-49	384	3	duru, a. (2011	ORG
flr-49	386	1	447468	DATE
flr-49	387	1	10.1080/0020739x.2010.550938	CARDINAL
flr-49	387	2	j. h.	PERSON
flr-49	387	3	1970	DATE
flr-49	389	1	h. w. reese & l. p. lipsitt	PERSON
flr-49	389	2	5	CARDINAL
flr-49	390	1	new york	GPE
flr-49	391	1	fuchs	ORG
flr-49	391	2	l. s.	PERSON
flr-49	391	3	compton	PERSON
flr-49	391	4	d. l.	PERSON
flr-49	391	5	fuchs	ORG
flr-49	391	6	d.	NORP
flr-49	391	7	powell	GPE
flr-49	391	8	s. r.	PERSON
flr-49	391	9	schumacher	PERSON
flr-49	391	10	r. f.	PERSON
flr-49	391	11	hamlett	PERSON
flr-49	391	12	c. l.	PERSON
flr-49	391	13	2012	DATE
flr-49	393	1	48(5	CARDINAL
flr-49	393	2	1315	CARDINAL
flr-49	394	1	10.1037	CARDINAL
flr-49	394	2	k. k.	PERSON
flr-49	394	3	d. f. (	PERSON
flr-49	394	4	1990	DATE
flr-49	396	1	d. f. bjorklund	PERSON
flr-49	397	1	hillsdale	GPE
flr-49	397	2	nj	ORG
flr-49	397	3	lawrence erlbaum	PERSON
flr-49	398	1	hefferman	ORG
flr-49	398	2	n., & koedinger	ORG
flr-49	398	3	k. r.	PERSON
flr-49	398	4	1997	DATE
flr-49	400	1	m. g. shafto & p. langley	PERSON
flr-49	400	2	nineteenth	ORDINAL
flr-49	400	3	annual	DATE
flr-49	401	1	307-312	CARDINAL
flr-49	402	1	nj	ORG
flr-49	402	2	lawrence erlbaum	PERSON
flr-49	403	1	hu	PERSON
flr-49	403	2	w.	PERSON
flr-49	403	3	2010	DATE
flr-49	404	1	2	CARDINAL
flr-49	404	2	the new york times	ORG
flr-49	405	1	j.	PERSON
flr-49	405	2	2007	DATE
flr-49	407	1	j. watson & k. beswick	ORG
flr-49	407	2	30th	ORDINAL
flr-49	407	3	annual	DATE
flr-49	407	4	australasia	GPE
flr-49	407	5	2	CARDINAL
flr-49	408	1	421	CARDINAL
flr-49	409	1	adelaide	ORG
flr-49	410	1	merga	PERSON
flr-49	411	1	khng	PERSON
flr-49	411	2	k. h.	PERSON
flr-49	411	3	& lee	PERSON
flr-49	411	4	k.	PERSON
flr-49	411	5	2009	DATE
flr-49	413	1	19(2	DATE
flr-49	413	2	262	CARDINAL
flr-49	414	1	10.1016	CARDINAL
flr-49	414	2	kieran	PERSON
flr-49	414	3	1981	DATE
flr-49	416	1	317	CARDINAL
flr-49	417	1	10.1007	CARDINAL
flr-49	417	2	e. j.	PERSON
flr-49	417	3	stephens	PERSON
flr-49	417	4	a. c.	PERSON
flr-49	417	5	mcneil	NORP
flr-49	417	6	n. m.	PERSON
flr-49	417	7	m. w.	PERSON
flr-49	417	8	2006	DATE
flr-49	420	1	297-312	CARDINAL
flr-49	420	2	koedinger	ORG
flr-49	420	3	k. r.	PERSON
flr-49	420	4	alibali	PERSON
flr-49	420	5	m. w.	PERSON
flr-49	420	6	& nathan	ORG
flr-49	420	7	m. j. (	PERSON
flr-49	420	8	2008	DATE
flr-49	422	1	32(2	CARDINAL
flr-49	422	2	366	CARDINAL
flr-49	423	1	10.1080/03640210701863933	CARDINAL
flr-49	423	2	k. r.	PERSON
flr-49	423	3	m. j.	PERSON
flr-49	423	4	2004	DATE
flr-49	425	1	13(2	CARDINAL
flr-49	425	2	129	CARDINAL
flr-49	426	1	koedinger	ORG
flr-49	426	2	k. r., & terao,	PERSON
flr-49	426	3	2002	DATE
flr-49	428	1	c.d. schunn & w. gray	ORG
flr-49	428	2	annual	DATE
flr-49	429	1	542-547	QUANTITY
flr-49	430	1	nj	ORG
flr-49	430	2	lawrence erlbaum	PERSON
flr-49	431	1	k. lee et al	PERSON
flr-49	431	2	95	CARDINAL
flr-49	432	1	1978	DATE
flr-49	434	1	2326	CARDINAL
flr-49	436	1	2011	DATE
flr-49	438	1	http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=18728 lee	PERSON
flr-49	438	2	k., lim	PERSON
flr-49	438	3	z. y.	PERSON
flr-49	438	4	yeong	GPE
flr-49	438	5	s. h.	PERSON
flr-49	438	6	ng, s. f.	ORG
flr-49	438	7	m. w.	PERSON
flr-49	438	8	2007	DATE
flr-49	440	1	june	DATE
flr-49	440	2	163	CARDINAL
flr-49	441	1	10.1016	CARDINAL
flr-49	441	2	j.brainres.2007.04.040 lee	PERSON
flr-49	441	3	k.	PERSON
flr-49	441	4	s. f.,	PERSON
flr-49	441	5	bull	ORG
flr-49	441	6	r.	NORP
flr-49	441	7	m. l.	PERSON
flr-49	441	8	r. h. m.	PERSON
flr-49	441	9	2011	DATE
flr-49	443	1	algebraic	PERSON
flr-49	444	1	103(2	CARDINAL
flr-49	444	2	269-281	CARDINAL
flr-49	445	1	10.1037	CARDINAL
flr-49	445	2	lee, k., yeong	PERSON
flr-49	445	3	s. h. m.	PERSON
flr-49	445	4	ng, s. f.	PERSON
flr-49	445	5	graham	PERSON
flr-49	445	6	s., & chee	ORG
flr-49	445	7	m. w. l.	PERSON
flr-49	445	8	2010	DATE
flr-49	447	1	42(6	CARDINAL
flr-49	447	2	591	CARDINAL
flr-49	448	1	10.1007	CARDINAL
flr-49	448	2	b. t.	PERSON
flr-49	448	3	2007	DATE
flr-49	449	1	psle maths	PERSON
flr-49	450	1	http://www.moe.gov.sg/media/forum/2007/forum_letters/20070217.pdf macgregor	PERSON
flr-49	450	2	m., & stacey	ORG
flr-49	450	3	k. (	PERSON
flr-49	450	4	1997	DATE
flr-49	451	1	algebraic	PERSON
flr-49	451	2	11-15	CARDINAL
flr-49	452	1	33(1	CARDINAL
flr-49	452	2	1-19	CARDINAL
flr-49	452	3	10.1023	CARDINAL
flr-49	452	4	mayer	PERSON
flr-49	452	5	r. e.	PERSON
flr-49	452	6	1989	DATE
flr-49	454	1	240	CARDINAL
flr-49	455	1	mayer	PERSON
flr-49	455	2	r. e.	PERSON
flr-49	455	3	2002	DATE
flr-49	457	1	41	CARDINAL
flr-49	457	2	85	CARDINAL
flr-49	458	1	meter	PERSON
flr-49	458	2	j. (	PERSON
flr-49	458	3	2005	DATE
flr-49	460	1	17(4	CARDINAL
flr-49	460	2	285	CARDINAL
flr-49	461	1	10.1007	CARDINAL
flr-49	461	2	i. v. s.	PERSON
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flr-49	461	4	m. o.	PERSON
flr-49	461	5	gonzalez	PERSON
flr-49	461	6	e. j.	PERSON
flr-49	461	7	s. j. (	PERSON
flr-49	461	8	2004	DATE
flr-49	462	1	2003	DATE
flr-49	462	2	fourth	ORDINAL
flr-49	462	3	eighth	ORDINAL
flr-49	463	1	chestnut hill	ORG
flr-49	463	2	ma: boston college	ORG
flr-49	464	1	nathan	PERSON
flr-49	464	2	m. j., & koedinger	PERSON
flr-49	464	3	k. r.	PERSON
flr-49	464	4	2000	DATE
flr-49	466	1	31(2	CARDINAL
flr-49	466	2	168	CARDINAL
flr-49	467	1	10.2307/749750	CARDINAL
flr-49	468	1	2000	DATE
flr-49	470	1	reston	GPE
flr-49	470	2	va: national council for teachers of mathematics	ORG
flr-49	472	1	2008	DATE
flr-49	474	1	washington	GPE
flr-49	474	2	dc	GPE
flr-49	474	3	u.s.	GPE
flr-49	475	1	s. f. (	PERSON
flr-49	475	2	2003	DATE
flr-49	476	1	two	CARDINAL
flr-49	477	1	7(1	CARDINAL
flr-49	477	2	1-17	CARDINAL
flr-49	477	3	ng	ORG
flr-49	477	4	s. f., & lee	PERSON
flr-49	477	5	k. (2005	PERSON
flr-49	478	1	five	CARDINAL
flr-49	479	1	9(1	CARDINAL
flr-49	479	2	60-84	CARDINAL
flr-49	480	1	ng	ORG
flr-49	480	2	s. f., & lee	PERSON
flr-49	480	3	k. (2008	PERSON
flr-49	482	1	the korean journal of thinking &	ORG
flr-49	482	2	18(1	CARDINAL
flr-49	482	3	67	CARDINAL
flr-49	482	4	ng	ORG
flr-49	482	5	s. f., & lee	PERSON
flr-49	482	6	k.	PERSON
flr-49	482	7	2009	DATE
flr-49	484	1	40(3	CARDINAL
flr-49	484	2	282	CARDINAL
flr-49	485	1	s. f.	PERSON
flr-49	485	2	lee	PERSON
flr-49	485	3	k.	PERSON
flr-49	485	4	s. y.,	PERSON
flr-49	485	5	2006	DATE
flr-49	487	1	w. bokhorst-heng	PERSON
flr-49	487	2	m. osborne &	ORG
flr-49	487	3	k. lee	PERSON
flr-49	488	1	227	CARDINAL
flr-49	489	1	ny	GPE
flr-49	490	1	oecd	ORG
flr-49	490	2	2010	DATE
flr-49	491	1	pisa 2009	ORG
flr-49	492	1	http://www.oecd.org/pisa/pisaproducts/46619703.pdf philipp	ORG
flr-49	492	2	r.	PERSON
flr-49	492	3	1992	DATE
flr-49	494	1	85	DATE
flr-49	494	2	557	CARDINAL
flr-49	495	1	stacey	PERSON
flr-49	495	2	k., & macgregor	ORG
flr-49	495	3	1999	DATE
flr-49	497	1	149	CARDINAL
flr-49	498	1	steinberg	PERSON
flr-49	498	2	r. m.	PERSON
flr-49	498	3	d. h., & ktorza	ORG
flr-49	498	4	1991	DATE
flr-49	500	1	22(2	CARDINAL
flr-49	500	2	112	CARDINAL
flr-49	501	1	swafford	ORG
flr-49	501	2	j. o., & langrall	ORG
flr-49	501	3	c. w.	PERSON
flr-49	501	4	2000	DATE
flr-49	502	1	6	CARDINAL
flr-49	503	1	31(1	CARDINAL
flr-49	503	2	89	CARDINAL
flr-49	504	1	k. lee et al	PERSON
flr-49	505	1	t. d.	PERSON
flr-49	505	2	lederberg	GPE
flr-49	505	3	a. r.	PERSON
flr-49	505	4	j. m.	PERSON
flr-49	505	5	2009	DATE
flr-49	507	1	29(2	CARDINAL
flr-49	507	2	239	CARDINAL
flr-49	508	1	usiskin, z. (	PERSON
flr-49	508	2	1988	DATE
flr-49	510	1	a. f. coxford & a. p. schulte	PERSON
flr-49	510	2	8-19	CARDINAL
flr-49	511	1	reston	GPE
flr-49	511	2	va: national council of teachers of mathematics	ORG
flr-49	512	1	warren	PERSON
flr-49	512	2	e., & cooper	ORG
flr-49	512	3	t. (	GPE
flr-49	512	4	2005	DATE
flr-49	513	1	year 2	DATE
flr-49	514	1	6(2	CARDINAL
flr-49	514	2	150	CARDINAL
flr-49	515	1	warren	PERSON
flr-49	515	2	e., & cooper	ORG
flr-49	515	3	t. j.	PERSON
flr-49	515	4	2009	DATE
flr-49	516	1	the elementary years	DATE
flr-49	517	1	21(2	CARDINAL
flr-49	517	2	76	CARDINAL
flr-49	518	1	wei	PERSON
flr-49	518	2	h. b.	PERSON
flr-49	518	3	chen	PERSON
flr-49	518	4	c. s.	PERSON
flr-49	518	5	x. l.	PERSON
flr-49	518	6	2012	DATE
flr-49	520	1	british journal	ORG
flr-49	520	2	157	CARDINAL
flr-49	521	1	10.1111	CARDINAL