@article{barrett_evaluating_2012,
	title = {Evaluating and {Improving} a {Learning} {Trajectory} for {Linear} {Measurement} in {Elementary} {Grades} 2 and 3: {A} {Longitudinal} {Study}},
	volume = {14},
	issn = {1098-6065, 1532-7833},
	shorttitle = {Evaluating and {Improving} a {Learning} {Trajectory} for {Linear} {Measurement} in {Elementary} {Grades} 2 and 3},
	url = {http://www.tandfonline.com/doi/abs/10.1080/10986065.2012.625075},
	doi = {10.1080/10986065.2012.625075},
	language = {en},
	number = {1},
	urldate = {2024-01-02},
	journal = {Mathematical Thinking and Learning},
	author = {Barrett, Jeffrey E. and Sarama, Julie and Clements, Douglas H. and Cullen, Craig and McCool, Jenni and Witkowski-Rumsey, Chepina and Klanderman, David},
	month = jan,
	year = {2012},
	pages = {28--54},
}

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