How Many Are Under The Shell?

This site features an interactive game to help students develop number sense and fluency with addition and subtraction facts to 10. Okta the octopus hides some bubbles under a shell, and then either adds more bubbles or takes some away. Students have to determine how many bubbles are left under the shell. The number of bubbles Okta works with can be set to a desired number or the student can select random draw. This allows for focus with a preferred number if desired by the teacher or student.
Resource ID#: 18871 Type: Virtual Manipulative
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Direct Link: http://illuminations.nctm.org/Activity.aspx?id=3566

General Information

Subject(s): Mathematics
Grade Level(s): K, 1
Intended Audience: Educators educators, Students
Suggested Technology: Computers for Students, Internet Connection, Speakers/Headphones, Adobe Flash Player
Keywords: number sense, counting, subtraction, addition, take away, add
Instructional Component Type(s): Virtual Manipulative,  Educational Game
Resource Collection: Games and Simulations

Aligned Standards

This vetted resource aligns to concepts or skills in these benchmarks.

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