Teaching 2nd grade subtraction using part-part-whole models? This comprehensive lesson package is perfect for teaching students how to solve subtraction story problems using bar models based on the ...

A fully resourced addition and subtraction lesson for being able to use mental strategies to solve addition and subtraction questions (including using known facts, place value columns and considering ...

Students put all of their addition and subtraction skills together to solve equations. In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia ...

In this hands-on activity, students color and cut out rockets that are used as manipulatives to help them develop number sense, counting, addition and subtraction skills. Humans have been ...