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学生说明
Tap 
to begin this activity.
Use the Seesaw tools to help you create an equation that equals 18?
Can you create another equation that equals 4?
What other equations can you create?
Add new slides to make your equations clear.
Tap 
to turn in your activity when you are done.
教师备注（学生不可见）
Download and share student strategies slides on Twitter. Use the hashtag #gmttc and tag @globalmath task in your tweet. Can't wait to see what your students design.
