Second Grade Math Thinker #3 is part of a series. There is a book for each quarter of the school year. The book could also be used independently of the set.
In the series the use of spiraling content, a research based best practice, is developed.
Every quarter the same characters will show up and help students understand a certain problem type. The rigor each time increases allowing the student to apply their background knowledge to the problem. Words used in the problem types remain similar