About this app
Free until March 1, 2016. Practice representing 2-digit numbers 10-99. Designed specifically for use in K-1 classrooms. Drag 10s and 1s blocks one at a time to the work area to represent the target number displayed. OR, drag the Blocks into place and then identify the number. Feedback is provided at any time by tapping the “checkmark” button at the top of the screen. Options include selecting a specific target number or letting the app randomly select a target from the range you select. Common Core: Kindergarten CCSS.MATH.CONTENT.K.NBT.A.1 Work with numbers 11-19 to gain foundations for place value. Common Core: 1st Grade CCSS.MATH.CONTENT.1.NBT.B.2 Understand place value. Understand that the two digits of a two-digit number represent amounts of tens and ones.
Latest release
What’s New
• Updated to support iOS12 - thank you for your patience. • A few other minor tweaks • As time allows, I'd enjoy hearing how you're using this app in the classroom and at home.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 12, 2026 · 4:54 PM Free
Screenshots
