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Category: Algebra
- An Oldie Revisited: The Border Problem
Category: Algorithms
- Algorithms Are Not Enough!
Category: Angle Measurement
- Teaching about Angles―A Hand-On Approach
Category: Assessment
- Solving 100 ÷ 3 Mentally: A Surprise
- One Lesson, Three Grades, Three Twists
- Place Value: How to Assess Students’ Understanding
- A Mental Math Lesson
- We Ask, We Listen, We Learn
Category: Books by Marilyn
- “Student-Centered” vs “Traditional” Math Teaching
Category: Data
- Beans and Scoops
- Chrysanthemum—An Oldie but Goodie
- Alphabetical Probability
Category: Decimals
- When You Multiply by 10, Just Add a Zero? Horrors!?!
- Teaching Adding Decimals: What If You Give the Answer First?
- A Decimal Lesson . . . about 13/20 and More
Category: Division
- One Lesson, Two Pedagogical Mistakes
- Preparing and Planning: How I Get Ready for Teaching a Math Lesson
Category: Estimation
Category: Fractions
- What Is 5 Divided by 4? So Many Answers!
- An Important Teacher Decision: When and When Not to Give the Answer?
- Fractions on a Number Line
- Fix It: An Activity for Ordering Fractions
Category: Games
- What’s the Longest Number String Possible?
- Race for 20―A Counting Game for All Ages
- Riddles That Rhyme (not entirely a math post)
- One of My All Time Favorite Games
- Oh No! 99!
- Multiplication Bingo
- The Game of Pathways
- Can You KenKen?
- Four Strikes and You’re Out
Category: General Interest
- Five Twists on Tic-Tac-Toe
- What Are Good Math Questions to Ask Students?
- Can 1/3 + 1/3 = 2/6? It seemed so!
- Using Math Menus: Some Nuts & Bolts
- When Should and Shouldn’t We Give Answers?
- Always Try a Problem Before You Assign It
- Does Changing Subtraction to Addition Make It Easier?
- A Reponse to Joe Schwartz’s Blog about Algorithms
- One Children’s Book . . . Different Grade Levels
- The Equal Sign: What It Really Means
- Postscript about the Number Eleven
- Eleven Things about the Number Eleven
- Using Children’s Literature to Teach Math
- Helping Students Open Their Minds
- A Number Line Exploration
- A Mental Math Lesson, Part 2
- Goldilocks, the Three Bears, and Teaching Math
- Why I Tweet
- The 1–10 Card Investigation
- Where’s the Math?
- An Unusual Word Problem: “Dealing in Horses”
- Yet Another Way to Subtract
- Another Way to Subtract
- Word Problems
- Why I Like Using Open Number Lines (Though I Don’t Like the Name)
- The Game of 2048
- Relearning High School Math
- Connecting Math and Reading
- Math at the Deli
- Welcome to My Blog
Category: Geometry
Category: Interviews one-on-one
Category: Math and Literature
Category: Math Menu
Category: Math Reasoning Inventory
Category: Mental Math
Category: Multiplication
Category: Number and Operations
- Word Problems: Don’t Put the Cart Before the Horse
- A Problem with a Word Problem
Category: Numerical Reasoning
Category: Place Value
Category: Probability
Category: Problem Solving
Category: Real World Problems
Category: Silent Math
Category: Statistics & Probability
Category: Subtraction
Category: Teacher Resource
Category: Technology
Category: Tutoring
Category: Video Clips
Category: Word Problems