Ratio and Proportion

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How big could this mid-term election be?

Number Sense Math and Social Studies Current events Ratio and Proportion Data and probability
Will the November 8th 2022 election bring record number of voters to the polls? Students get a chance to understand what the usual percentage of voters is, look for trends and central tende...

How much caffeine are you consuming?

Algebra Number Sense Math and Science Math and Food Ratio and Proportion Wow factor
   Did you know that there is an amount of caffeine that is too much for the growing brain of a teenager?  We did some research and have asked students to examine the sources of caffei...

Willy Makeit or Betty Wont

Number Sense Geometry Ratio and Proportion Funny Wow factor
I have to go to the bathroom pretty badly. I have to admit that I have been holding it in for a while.  Finally!  I see a bathroom sign!  Wait ... it is in kilometers?  How...

Hexadecimal coloring

Number Sense Geometry Math and Science Math and Art Ratio and Proportion
Probably most of us have heard of and even used hexadecimal color codes. Don't you wonder why their number descriptions really make sense? In this activity we first ask students to color in o...

Mallie's latest Big Burger

Algebra Number Sense Math and Food Ratio and Proportion
It's time to treat your students to ratios, proportions, fractions and BIG BURGERS! In this activity students explore the ratio of the various ingredients in the world's largest burger (pic...

How old are you?

Algebra Number Sense Ratio and Proportion Wow factor
We usually give our ages in years, but that isn't very precise is it?  In this activity students find their age in days, hours and minutes.  First students take two minutes to estimate the...

The odds of horse race betting

Algebra Number Sense Sports Current events Ratio and Proportion Data and probability
Rich Strike surprised everyone at the Kentucky Derby horse race in early May by moving from 18th place at the half-way mark (out of 20 horses) to winning the race. Churchill Downs, the track in...

How big of a crepe can you make?

Algebra Number Sense Geometry Math and Food Ratio and Proportion
At Costco you can buy this huge tub of nutella.  It contains nearly 7 pounds of chocolaty-hazelnut spread. We use nutella to make banana/nutella crepes.  How long will that tub last u...

Shrinkflation

Algebra Number Sense Math and Food Current events Ratio and Proportion Data and probability
Shrinkflation! What do you think this word means?   Inflation in the cost of living (2021) was estimated to be about a 7% rise. If "shrinkflation" is happening at the same time, is t...

Mardi Gras, 2023

Algebra Number Sense Holidays and Annual Events Ratio and Proportion
Updated for 2023! Tuesday, February 21, 2023, will be the day before Ash Wednesday and the start of the season of Lent.  Mardi Gras is a last hoorah and is celebrated throughout the world ...
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