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Mom's matzo ball soup
Mom's matzo ball soup

Passover is one of the three high holidays in the Jewish calendar and celebrates the Exodus of Jews from slavery in Egypt. Let your students review fractions in...

Number Sense Math and Food Grades 2–5
Green, green river
Green, green river

During the St. Patrick's Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green. Students learn what PPM (parts per million) means and attempt...

Algebra Number Sense Grades 4–6
Shamrock Shake
Shamrock Shake

For Saint Patrick's Day add a little nutrition math to your celebration. In this post we look at calories, carbohydrates, sugars, fats, and proteins to decide what would...

Number Sense Math and Science Grades 4–6
Nobel prize in physics 2013
Nobel prize in physics 2013

François Englert and Peter W. Higgs François Englert and Peter W. Higgs were jointly awarded the Nobel Prize in Physics 2013 for the theory of how particles acquire...

Algebra Number Sense Grades 5–HS
Really old
Really old

Tom Lehrer is a singer, songwriter, satirist, pianist and mathematician who has written some wonderful songs. In 1959 he wrote a song called “New Math”. At that time,...

Number Sense Math and Social Studies Grades 5–HS
Bits, bytes, and nibbles
Bits, bytes, and nibbles

Clicking on the image will show it larger. I'm not very good at understanding how large my device capacities are and how big the files that I want...

Algebra Number Sense Grades 4–HS
Crop circles
Crop circles

In the travel section of our newspaper this week, Wiltshire, England was a recommended destination to see Stonehendge and crop circles ........... crop circles? Many of the crop...

Algebra Geometry Grades 4–7
Methane math
Methane math

Updated! Carbon dioxide and methane are our two most prevalent human-contributed greenhouse gases. This holstein cow is one of many huge contributors to our methane production. Let students...

Algebra Number Sense Grades 5–HS
My teacher says this stream is parabolic.  Is he correct?
My teacher says this stream is parabolic. Is he correct?

Instead of asking students to just believe what you've said, why not ask them to verify your assertions? Students plot the points of the stream, perhaps map them...

Algebra Number Sense Grades 7–HS
Father's Day blueberry surprise
Father's Day blueberry surprise

Father's Day is coming up, and there is still time to have a tiny fraction review in the guise of celebrating Father's Day. This is a short activity...

Number Sense Math and Food Grades 3–6
Ladder figuring
Ladder figuring

Brian can't even go to his town's spring festival without seeing math. Let your class approximate the height or length of this ladder by using the relative size...

Algebra Number Sense Grades 5–HS
Big gulp
Big gulp

Do you or your students love sugary drinks? What if it were against the law to order a large sugary drink where you lived? On September 13th, 2012...

Algebra Number Sense Grades 5–7