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Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)
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Recent Blog posts:
- Vlog Ep #10: Involving Parents in Their Children’s Math Education
- Vlog Ep #09: Fake Math and Pseudocontexts
- Vlog Ep #08: Teaching Math Unshackled from Standards and Curriculum Documents
- Vlog Ep #07: How to Use Technology to Teach K-6 Math
- Vlog Ep #06: Look Around You for Real Life Contexts for K-6 Math
- Vlog Ep #05: Kids Figure Stuff Out (And What That Means For Math Education)
- Vlog Ep #04: Math-Anxious Parents Produce Anxious Kids Who Know Less Math (research report)
- The Most Challenging K-6 Math Topic (Survey Results)
- Teach Times Tables Without Apologies
- Math is Important, REALLY Important
- Math in the News: Babies Can Do More Math Than We May Have Realized
- Math in the News: Better Ways to Teach Math to Aboriginal Students
- Math in the News: Is Rote Learning the Secret Behind Chinese Mathematics Success?
- K-6 Math in the News: Censuses, Counting People and Math
- K-6 Math in the News: Schools Failing to Recognize Kids Who Don’t Fit In?
- K-6 Math in the News: Supermarket Math Fails
- K-6 Math in the News: Pokémon Go and Math for Kids
- K-6 Math in the News: Everyone CAN Succeed at Maths
- K-6 Math in the News: Facebook Flower Math Puzzle
- Sixth-Graders Learn Business Skills in Mathematics Class
- Asian Kids Beat Out the West in Math Again
- Teach Measurement Using a Rain Gauge
- Teaching a Great Math Lesson Part 1: Capture Students’ Attention!
- Welcome to Professor Pete’s Classroom