standard_description: Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.
problem_activity: Stage 4: Add and Subtract
Required Preparation
Materials to Copy
Blackline Masters
Math Stories Stage 1 and 4 Pictures
Math Stories Stage 4 Recording Sheet

Narrative
Students pose and solve addition and subtraction story problems about pictures. Students write an equation to represent their story problem.
Variation:
Pages of picture books can also be offered to help students generate stories.


aligns: no