Multiplication Archives - MARILYN BURNS MATH

General Interest Interviews One-on-One Listening to Learn Mental Math Multiplication Number and Operations Numerical Reasoning Silent Math

What Was Nathan Thinking?

In a Listening to Learn interview, Nathan knew from memory that 6 x 5 equals 30. He explained to Rusty Bresser, "So, 6 divided by 2 equals 3, and you just add a zero behind it." Here's a suggestion for using that video clip in a lesson and what happened in two different classes.

Marilyn BurnsFebruary 22, 2022

Estimation General Interest Interviews One-on-One Listening to Learn Mental Math Multiplication Number and Operations Numerical Reasoning

Two Students . . . Two Different Ways of Reasoning

On Wednesday, May 5, 2021, I posted the sixth in my Wednesday Twitter series of video clips from Listening to Learn math interviews. The response to this Tweet amazed me―it received over 100,000 impressions! I was appreciative of the many supportive and insightful replies. Read more.

Marilyn BurnsMay 11, 2021

Games General Interest Multiplication Number and Operations Numerical Reasoning

What’s the Longest Number String Possible?

I just learned about Factors and Multiples, a shelter-at-home game that’s engaging as solitaire and can be played as a two-person game either cooperatively or competitively. (I’ve played it both ways.) It’s intriguing for both adults and kids (as long as players know about factors and multiples of numbers up to 100). It’s a keeper.

Marilyn BurnsApril 3, 2020

Angle Measurement Books by Marilyn General Interest Geometry Multiplication Numerical Reasoning

Teaching about Angles―A Hands-On Approach

What am I doing on the floor? Teaching angles to fourth graders. Read about how instruction using Pattern Blocks and hinged mirrors, along with supporting number talks, can help students learn to understand and measure angles. Here I present a (sort of) photo essay to describe what actually occurred over the first three days of instruction. Ideas for continuing the instruction follow.

Marilyn BurnsApril 29, 2019

Decimals General Interest Multiplication Number and Operations Numerical Reasoning Real-World Problems Videos Word Problems

When You Multiply by 10, Just Add a Zero? Horrors!?!

Have you ever asked students to solve 12.6 x 10, and they respond that the answer is 12.60? I have, many times. Students who do this apply a pattern that works when they multiply whole numbers by 10—they tack on a zero to the end of the number they’re multiplying. But then they apply the same pattern when working with decimals. What can we do?

Marilyn BurnsOctober 1, 2018

Division Estimation General Interest Multiplication Number and Operations Numerical Reasoning

Preparing and Planning: How I Get Ready for Teaching a Math Lesson

A friend and I were talking recently about how much work we put into planning lessons. Even after all these years of teaching, I have to think through lessons as carefully as possible, both about the logistics and about the mathematical thinking I want to keep in mind and support. Here’s an example.

Marilyn BurnsMarch 27, 2017

Assessment Books by Marilyn Division General Interest Math and Literature Multiplication Number and Operations Numerical Reasoning Problem Solving Word Problems

One Lesson, Three Grades, Three Twists

The children's book 17 Kings and 42 Elephants by Margaret Mahy is one of my long-time favorites. In this post I describe a division lesson that I’ve taught to third graders but recently revisited with fourth- and fifth-grade classes. With the older students, we tried extensions that differentiated the experience and put students in charge of deciding on problems for themselves. It was exciting to me to expand a lesson I've taught many times into a multi-day investigation.

Marilyn BurnsJanuary 30, 2017

Games General Interest Multiplication Number and Operations

Multiplication Bingo

Will Multiplication Bingo guarantee that students learn the multiplication facts? No. But it will help familiarize them with factors and multiples, engage them in a game that involves both luck and strategy, encourage them to make conjectures, and have them use data to guide decisions. Plus, the game provides a way to send home information to families about how their children are being asked to think and reason in math class.

Marilyn BurnsNovember 28, 2016

Games Multiplication Number and Operations Numerical Reasoning

The Game of Pathways

I like the multiplication game of Pathways. It engages students’ interest, helps develop their familiarity with the times table, and encourages them to think strategically. It's been a part of my teaching for a long time. Recently I came up with a way to introduce the game that made it easier for students to learn to play. It was a huge success. Read about what I did and how the students reacted.

Marilyn BurnsMarch 10, 2016

Multiplication