# Category: Number Sense

## It’s almost summer now

How much water should you drink? How much pee is in this pool? How has the presence of lyme disease changed? Which is the best drink deal at the fair?

## Souvenirs and concessions

This activity is an introduction to systems of equations with easy, motivating problems that deal with the cost of stadium purchases for food and souvenirs. These can be done by any puzzle solving students.

## Memorial Day 2023

Who are we honoring?  How did the holiday come about?  Isn’t Memorial Day usually on May 30th?
Students learn a little about the history of the holiday, analyze the possibilities and patterns for when it is celebrated and make observations about the incredible numbers of deaths that have been caused by war.

## The 8th billion baby

How fast is the World’s population growing? Will the world’s population size increase indefinitely?  Are all countries’ populations increasing at the same rate? What are some of the factors affecting this growth?

## Patterns in the binomial expansion, Pascal

Realizing that (X+Y)n can be expanded with the help of Pascal’s Triangle offers some pretty and interesting math play.  We love to bring a little fun and beauty into our math classes and the end results are neat!  Here is…

## Mother’s Day ideas (14 activities)

Updated! How much do we spend on Mother’s Day – Use the Mother’s Day event to engage your students in approximating, reasoning, and investigating as students estimate how much is spent in the United States for Mother’s Day. For what…

## Effects of new MLB rules

Students use our recent data to graph, analyze and hypothesize about the affect of the new MLB rule changes.

## New bust of King Charles … in chocolate

Saturday, King Charles will be crowned as the King of the United Kingdom. Artists at the Mars Wrigley company made a gorgeous chocolate bust of the King wearing his military uniform. We wondered how much that big piece of chocolate cost to make.

## Wheel of Theodorus

Bring a little art into your math class as you begin to use the Pythagorean theorem and your students first meet irrational numbers.

## Earth Day actions for our planet

We have 16 activities that you could use for Earth Day! Saturday, April 22nd is Earth Day. Help your students become activists for our planet? We have 16 activities that support recycling, conserving resources, awareness of climate change and protecting our planet.…

## Tax time, Patriots Day, Boston Marathon

The middle of April is a busy and interesting time. We have 6 timely activities to try in your classes.

## Time to make your prom clothes … with Duck Tape

Admire the possibilities of Duck Tape attire and calculate the cost of some of the outfits in time and tape.

## Spring and Easter ideas – 6 activities

Dyeing eggs with food coloring – Students use the chart on the back of a food dye package to compare the strangely different recipes listed for coloring a cake, icing, or dyeing eggs. They look for and create equivalent ratios…

## Passover starts on Wednesday

Two activities involving fraction halving, doubling, and tripling operations with recipes for Passover. Students end up creating a huge matzo ball.

## Challenges for April Fools Day

This day is known for pranks and puzzles.   Try one of these 4 activities on April Fools Day. Ask students to analyze where I made my mistake        PerplexingProblem.pdf For members we have solutions. PerplexingProblem-solution.pdf      …