Mathematics is stronger than a card house. Pupils watch a video of the beginning of the building of a triangular card house. Scholars come up with questions they wonder about from the video and ask for more information to arrive at an answer. To finish, they compare their solutions to the details of the finalized card house and share their strategies.

Concepts

1-digit multiplication, estimation multiplication, multiplication, patterns, pythagorean theorem, measurement

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Instructional Ideas

• Encourage learners to look for patterns in their solutions

Classroom Considerations

• Assumes the teacher is familiar with Three Act Tasks
• One of the possible questions requires knowledge of the Pythagorean Theorem to solve as presented

Pros

• Provides questions and solutions involving different levels of mathematics using the same initial video
• Contains questions to ask to get students to explain their thinking

Cons

• None

Common Core

3.OA.A.3 3.OA.C.7 3.NBT.A.3 4.OA.A.3 8.G.B.7