### Number Sense

We found 8 post available for you

#### How many hot chocolate scoops do I need?

Even though it is now Spring, here in New England we are still chilled and hope that some hot chocolate will warm us up. ﻿ Clicking on the above image will take you to Brian's movie of makin...

#### The Algebra of Magic Squares

Have you seen magic squares before? How could a teacher use these puzzles to help students with different number skills? How few blank cells could you leave? Are there any special cel...

Jennifer Fairbanks from Hopkinton, MA sent us this picture of the cookies that she baked in 4 hours using 13 eggs and 5 cups of sugar. Do you see some math here? Do you have an add...

#### Someone ate my cake

In this fraction operation and representation activity, students are asked to decide how much of my cake was eaten. Using fraction multiplication (or angle measure if that is where you need an act...

#### A&W's bigger burger

﻿ A&W offered a bigger, tastier burger but it didn't succeed in grabbing customers away from the hugely popular McDonald's quarter pounder. The A&W third pounder...

#### John Urschel, retired Baltimore Raven and Black mathematician

John Urschel is a young man with several seemingly disparate characteristics and talents.  He is an athlete and a mathematician and he is a black man and a mathematician.  He loves what he...

#### Drill bit fractions

Act One:  Drill bits are measured by the diameter of the bit in inches. The drill bits below are ordered left to right in increasing size. The numerators in the fractions have been black...

#### Data on the National Mall sites (2 Activities)

Activity #1 - Look at the individuals who are memorialized on the National Mall and using fractions or percents decide what you can notice about those we honor. The activity is called "MLK...