Number Sense

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The new largest Lego set ever - The Roman Colosseum

Algebra Number Sense Ratio and Proportion 3-act tasks Data and probability
Note: This is a remake of our 2014 and 2017 activities "How Much Does a Lego Cost?". How much could the Roman Colossem Lego set cost ? Student first make a guess and then think about what ...

Not enough mashed potatoes

Algebra Number Sense Math and Food Holidays and Annual Events
Using his famous mashed potato recipe, Brian has asked students to change decimals to fractions, to calculate ingredient measures for various-si...

Canstruction

Algebra Number Sense Geometry Math and Social Studies 3-act tasks
  Act One:  Take a look at the pic. What questions come to mind? Just before Thanksgiving there are competitions all over the world to celebrate cool design, tricky engineering, a...

Ravensburger huge puzzle

Number Sense Geometry Math and Social Studies Math and Art Ratio and Proportion
 This puzzle is gorgeous and HUGE! Ravensburger says that if you spent 2 hours every day putting this puzzle together it would take you a year to finish. What do you wonder? Students ...

Candy deals

Number Sense Math and Food Holidays and Annual Events Ratio and Proportion 3-act tasks Data and probability
We found big mixed bags of candy at really good prices ... we think. Students are asked to decide which would be the best deal and the worst deal on candy.  They can also create t...

Is the Electoral College fair?

Number Sense Math and Social Studies Current events Ratio and Proportion
Show your students this really cute segment comparing how the Electoral College functions in our elections to what students think is fair and just. From the New York Times, Electoral ...

Monster cake

Number Sense Geometry Math and Food Ratio and Proportion
Jodie Berman, a high school math teacher in Chicago, loves mathematics and loves to cook.  We've created an activity based on her Monster Cake (composed ...

2 Hiking Activities

Algebra Number Sense Sports Ratio and Proportion
How much food do you need to carry to hike the Appalacian Trail? The AT is a hiking trail that begins in Georgia and ends on Mount Katadin, Maine. Fall is a beautiful time to be outdoors or on ...

Can you show that the Pythagorean Theorem works?

Algebra Number Sense Geometry
Use this activity to help your students work through the meaning of the Pythagorean theorem. Pythagorean theorem experiences are often skill and drill work with contrived right triangle problem...

Extreme weather 2020

Number Sense Math and Science
Because of climate change, we've been having too many extreme weather events. There have been unusual droughts and heat in the West, an increased number of hurricanes, severe flooding, and high ...
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