
Introduction to Proofs
Grade 9 · Math · 45 min
What's Included
Learning Objective
I can identify and apply properties such as the associative and transitive properties to justify algebraic steps.
Warm-Up Video
Professor Dave Explains · 5:16
Basic Number Properties for Algebra
Practice Questions
7 questions · Short answer
Exit Ticket
Quick comprehension check
“Identify the property that justifies the equivalence: 5 + (x + 3) = (5 + x) + 3 Identify the property that justifies the equivalence: 7x + 0 = 7x ”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts



