2-Digit Addition Toolkit

Teaching 2-digit addition can get tricky once students start using different strategies, especially when you have students who are ready for regrouping and others who still need more support.

The 2-Digit Addition Toolkit gives you the resources you need to teach, practice, assess, and reteach 2-digit addition using three strategies:

• base ten blocks
• break apart
• open number line

You don't have to teach every strategy! Choose the ones that make the most sense for your students and use the resources to teach numbers without regrouping to numbers with regrouping.

What's included?

Diagnostics - Use the 2-digit addition diagnostics before or after instruction to see what students understand and identify areas where they may need additional support.

Base Ten Blocks - Help students model 2-digit addition with a concrete representation of tens and ones, including regrouping.

Break Apart Strategy - Help students break numbers into tens and ones to make adding 2-digit numbers easier to understand.

Open Number Line Strategy - Help students visualize 2-digit addition by breaking apart numbers and making jumps on an open number line.

Reteaching & Error Analysis - Not sure why a student keeps getting the wrong answer? These resources help you look beyond the mistake to identify common errors, possible root causes, and ideas for reteaching.

Extra Practice & Extensions - Give students additional opportunities to practice their skills or extend their thinking.

You'll also get...

• teacher-friendly strategy videos for all three strategies
• without regrouping and with regrouping resources
• reteaching checklists and ideas
• common errors and possible root causes
• a start here guie to help you navigate the toolkit

The goal isn't to gve you one more giant pile of worksheets. It's to give you a collection of practical 2-digit addition resources you can use at different points in instruction, whether you're introducing a strategy, giving students practice, or trying to figure out why a student is still struggling.