In this engaging, hands-on lesson, students solidify their understanding of place value by adding and regrouping two-digit numbers using M&Ms.

Students sketch base-ten blocks in this lesson that builds both number sense and fluency adding to 20!

Dive deep into word problems with this lesson that teaches students to sketch base-ten blocks to add multiples of 10 and two-digit numbers. Use alone or with the lesson plan Let's Build It! Two-Digit Addition.

Use this lesson to introduce composing and decomposing as part of your students’ addition and subtraction toolkits.