True or False: Algebra Equations Explored
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True or False: Algebra Equations Explored
Year 7-8 Mathematics Understanding Equations and Equivalence Lesson 4 of 4: Mastering Algebra Basics
WALT: We Are Learning To
Check the truth of number sentences using addition and subtraction Understand that the equal sign means 'the same as' Use concrete materials to verify our answers Work together to check each other's reasoning
Let's Start with a Challenge!
Look at this equation: 7 - 5 = 6 - 4 Is this TRUE or FALSE? Think about what the equal sign really means!
The Equal Sign Means 'Same As'
The = symbol doesn't mean 'find the answer' It means both sides must be equal Both sides must have the same value We need to check if they balance like a scale
Let's Use Our Counters!
Take 7 counters, remove 5 Take 6 counters, remove 4 Count what's left on each side Are they the same?
Success Criteria - What We Need to Achieve
{"left":"Correctly identify at least 5 number sentences as true or false\nExplain our reasoning using the idea of equivalence","right":"Use counters or drawings to check our work\nWork with a partner to verify our answers"}
Your Turn: True or False Detective Work
Work with your partner Use your worksheet with 7 number sentences Use counters to check each equation Record TRUE or FALSE for each one Write a simple reason for your answer
Reflection and Next Steps
What made some equations tricky to check? How did using counters help you understand? Remember: equals means 'same as', not 'calculate' For homework: Find 3 true and 3 false number sentences in real life!