Grade 1 · Number
Equality and Inequality
The equals sign is the most misunderstood symbol in elementary mathematics. Most students interpret it as write the answer here rather than as a statement of balance. This misconception causes problems all the way through algebra. Grade 1 is the critical window to establish the correct meaning. True-and-false number sentences with expressions on both sides are the best tool for building this understanding.
LESSON VIDEO
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Lesson video
A short walkthrough to play in class or assign for flipped/at-home viewing.
WHAT STUDENTS WILL LEARN
✓Explain and demonstrate the meaning of equality: both sides have the same value
✓Explain and demonstrate inequality: one side is greater
✓Record equations using = and the not-equal symbol with expressions to 20
✓Determine whether number sentences are true or false: Is 3+7=8+2 true?
✓Recognize that = means is the same as, not write the answer here