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Germ-Killing Wipes
Science
In this activity, students get to dig into the real impact of disinfectant wipes. With one wipe claiming to kill 99.9% of germs and another at 99.999%, does that tiny extra percentage ac...
HSF.BF 5.NBT.7 6.NS.3 8.NS.1 6th 7th 5th 8th HS 5.NBT.3 place value 7.NS.2.d bar notation percent 7.RP.A.3 6.RP.A.3

Sugary Record
Food
How big is the world's largest cotton candy sculpture? 🍭 Ali Spagnola set out to break the Guinness World Record with a massive cotton candy sculpture. Kick ...
7th 8th 8th HS 7.NS.A 7.RP.A3 6.RP.A.3 6th food Easter

Starbucks Sales and Nutrition
Number Sense Food Ratio and Proportion Probability and Statistics
Kick off the activity with starter slides that spark curiosity by asking students if they recognize the Starbucks logo and how many locations they think are in the U.S. Then, engage them in estimating...
Starbucks Data percent proportion 6.RP.3 6.SP.5 7.RP.3 7.SP.1 6th 7th 8th 7.EE.3 HS nutrition

How much pee is in your pool (Updated)
Number Sense Geometry Science Funny
How much pee is in your pool? 🏊🏊 After chlorination, it has been hard to measure the quantity of pollutants in pool water.  A Canadian chemist, Xing-Fa...
Data and Probability 5.MD 4th 5th 6th 7th 4.MD.C 7.G.B 6.G.A 6.RP.A 7.RP.A unit ratio ratios of volume Volume pee 8.G.C.9 7.EE.B

A Glass of Sweat
Algebra Number Sense Social Studies Ratio and Proportion
What is this machine for?  Begin with the starter presentation slides to spark students' curiosity about the purpose of the machine. Then, engage them in the main activ...
6.RP.A.3 5.MD.A 5th 6th percentage 7th

It's almost summer now
Algebra Number Sense Geometry Science Food Ratio and Proportion Probability and Statistics
   How much water do you have to drink?     In this activity student develop formulas for calculating their water needs, learn about the effects of too lit...
5.MD 7.RP 7.NS.3 7.EE 6.SP 7.SP MP1 8.F HSA-CED HS 4.MD.C 7.G.B 6.NS.B 6.G.A 6.RP.A HSM HSA.REI.C.6 HSF.BF 5.OA.B HSA.REI.D 4.OA.B

Happy National D🍩nut Day!

Food Holidays
 We have 2 activities to support this silly, but awesome holiday -- National Donut Day (June 5th) :  How much have donuts changed?   Students become fam...
estimation Volume reasoning 3-act task donuts

How much does America spend for Mother’s Day?
Number Sense Social Studies Holidays 3-act tasks Probability and Statistics
Updated in April 2026 with new data; see the answer key.How much do we spend on Mother's Day? Use the Mother's Day event to engage your students (as a class) in approximating, reasoning, and investiga...
6th 7th 5th 4th Mother's day estimation

Earth Day Actions for Our Planet (April 22)
Algebra Number Sense Geometry Science
 We have 16 activities that you could use for Earth Day! April 22nd is Earth Day. Help your students become activists for our planet? We have 16 activities that...
5.NBT 3.MD 6.RP 7.RP 7.G 5.NF 6.EE 6.NS.3 7.EE 6.SP 7.SP MP1 MP2 MP8 Earth day 8.EE 8.F 8.SP 6th 7th 8th HS 5th 5.MD.5 4.MD.3 HSA HSF HSS.ID.C.7 MP5 HSN HSA.REI.C.6 HSG.SRT MP6 HS.TF HS.C climate change MP4 HS.G HSS.B

A geodesic icosahedron, the Times Square New Year's eve ball
Geometry Science Holidays Art Current events
 Image by kjpargeter on Freepik It's a gorgeous ball, covered with Waterford Crystal triangles, shaped as a geodesic icosahedron.  Every New Year's Eve it descends in Times Square to ma...
7.G.A.3 7.G.B 8.G HSG.GMD.B.4 Holidays geometry Christmas
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