(Paperback)

"First published in 2018 by Stenhouse Publishers"--Copyright page.

(Hardback)

This student book and accompanying teacher's guide explore the essential mathematical ideas of units and place value.

(Paperback)

"Every page of this innovative picture book contains a thoughtfully designed set of four shapes and the question 'Which one doesn't belong' Each of the shapes could be a correct answer to the question. Because there is no one right answer, children naturally shift their focus to justifications and arguments based on the shapes' geometric properties."--