What’s Hiding

Description

Practice basic addition and subtraction concepts. Discs are counted, then covered, and some slide out from under the cover. Your job is to tell how many are still hidden under the cover. Work with numbers 1-5 or 1-10. Discs are displayed in a 5-frame or 10-frame format.

The iPad version includes an option to use numbers to 20 in two 10 frames. This option was added at the request of elementary education teacher candidates at Augustana College in Rock Island, IL who were working with kindergarten students. The iPad version also includes an option to count or subtilize the number of discs. That option was added in response to a user request.

Developed as part of the NumberSense Project at Augustana College in Rock Island, IL.

Pricing

Plan Price Details
What's Hiding? $0.99 Paid mobile app.

Reviews

Math Consultants
September 28, 2015

This tool aligns very nicely to the Kathy Richardson Concepts Assessments that are used as a diagnostic assessment to uncover areas of struggle in math for students in Grades K-3. This could be used to strengthen student understanding with assessment 4.

I use this tool support students with subitizing. It supports basic understanding of composition of numbers. I use it in math stations to support fluency and maintenance during small group work. I also use it during whole class discussion for number talks. Yes I would recommend this to a college because of the support and practice it provides my students that aligns to common core.

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