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How many feet of lights should I buy for my tree?
Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
Check out our Christmas Tree! We need to buy lights for the tree.  Without calculating, guess how many feet of lights we will need. What information would help you t...
estimation circumference MP1 MP2 MP3 6th 7th 8th HS HSG-MG.A.1 conic surface area 3-act task MP4

Winter Solstice 2023
Number Sense Geometry Math and Science Ratio and Proportion
It is really dark out now.  Why is that? Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth's tilt and the logic of da...
Data and Probability latitude HSG-MG.1 6th 7th 8th HS 7.G.3 HSG.GMD.4 HSG.C central angle winter solstice dark out

Do I have enough wrapping paper?
Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping paper together. Con...
estimation 6.G.1 7.G.6 surface area 6.G.4 nets 6th 7th 8th HS 7.G.B 6.G.A MP5 HSG.MG.A.3 7.EE.B 3-act task 6.EE.A measuring wrapping paper need

Wind chill
Algebra Number Sense Math and Science Ratio and Proportion
  The weather forecasters tell us what the wind chill temperature will feel like. How do they figure out that number? In this activity students use the National Weather System chart ...
Data and Probability patterns reading charts 6.EE.1 6.EE.2 7.EE.3 7.EE.4 8.EE.7 6th 7th 8th HS 5th HSF.LE.A.1 HSF.LE.A.4 5.OA.3 HSA.REI.B.3 wind chill interpolation weather MP4

The Algebra of Magic Squares
Algebra Number Sense
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...
5.NBT 6.NS 7.NS 5.NF 6.EE 7.EE MP2 8.EE 8.F 5.OA 6th 7th HS 5th 3rd 4th 4.NF 4.OA 3.OA 3.NF 4.NBT MP4 3.NBT 8.NS puzzles magic squares

Lots of Cranberries
Geometry Math and Food Holidays and Annual Events Ratio and Proportion
 The harvest must be nearing completion now and growers are selling their product to make cranberry juice, jelly, sauce, and of course, fresh berries in time for Thanksgiving. In this activit...
estimation 5.MD 6.RP 6.SP 8.G 6th 7th 8th 5th 7.G.B circle area cylinder volume using ratio to compare quantities cranberries ratio

Total lunar eclipse
Geometry Math and Science Current events Wow factor
On the morning of November 8, 2022, many of us will be able to see the last full lunar eclipse until March 2025. Luckily, many of us will be able to see the eclipse pretty close to when we woul...
time zones 4.MD 5.MD 6.G 7.G MP1 8.G 6th 7th 8th HS 5th 4th HSG MP4 reading graphics shadows light refraction

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...
6th 7th 8th 5th 6.RP.A 7.RP.A HSS-ID.A MP4 election math voter turnout percent electorate

I need help raking my leaves
Algebra Number Sense Current events Ratio and Proportion
Brian has spent too much time thinking about his leaves. He's worried about raking them alone and thinking about how long the job would take if people helped. In this activity students see the inve...
graph nonlinear hyperbolic inverse relationship work 8.F5 6.EE.9 5.G.1 5.G.2 MP8 MP.7 6th 7th 8th HS 5th HSA.CED.2 HSF.IF.4 HSA.REI.10 HSF.IF.5 HSF.IF.7

The size of chocolates
Number Sense Geometry Math and Food Holidays and Annual Events
In this activity students assume that all of our pieces of chocolate are about the same thickness and proceed to approximate their volumes by comparing only their surface areas.  Consider sh...
estimation food Volume mean radius estimation chocolate candy 3.MD.5 3.MD.6 6.G.1 7.G.4 7.G.6 6th 7th 5th 3rd 4th
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