Use this support lesson to provide students with the opportunity to explore what it means to estimate. This hands on activity can be used alone or alongside the lesson Estimating Length.

Use this scaffolded EL lesson to teach students about money and the bills we use to pay for things. Use alongside Base Ten Money: Hundreds, Tens, and Ones or alone as an independent lesson.

Why make things harder on ourselves? Teach your students to decompose numbers to make math easier! Use this as a stand alone lesson or a pre-lesson for Decompose to Multiply: 6, 7, 8, and 9.

Teach your students to confidently follow the steps of regrouping in subtraction problems. Use this as a stand alone lesson or alongside Regrouping with Popsicle Sticks: Double-Digit Subtraction.

Lay the foundation for multiplication by introducing your second graders to the concepts of skip counting and repeated addition. This lesson can be used alongside Up, Up, and Array, or separately to reinforce these important skills.

The ability to analyze the component of a word problem is an important foundation for young mathematicians. Use this as a stand alone lesson or alongside What's the Problem?

Guide students to use base ten blocks to solve two-digit by one-digit addition problems with regrouping. This lesson can be used independently or paired with the lesson Adding it All Up.