Grades 1–2: How Many Do You See? Base-Ten Blocks

Students apply their understanding of place value and subitizing to further develop their fluency in visualizing quantities as a collection of objects as they describe how they saw different arrangements of blocks

By Kristin Gray

This Math Routine takes about 10 minutes and can be used at the start of class to build engagement, encourage discourse, and develop number sense. Today's Goals • Develop number sense. • Language Goal: Count to answer how many. (Speaking and Listening) Prep Checklist • Click Project Screens to show this activity to the class. • Select how long an image is projected for: 1, 2, or 3 seconds; or ∞ (which keeps the image projected). • Screens 1-3 show ten frames; Screens 4-12 show ten frames and ones.