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Drill bit fractions
Number Sense Ratio and Proportion 3-act tasks
Act One:  Drill bits are measured by the diameter of the bit in inches. The drill bits below are ordered left to right in increasing size. The numerators in the fractions have been black...
4.NF.2. 7.RP 5.NF 6th 7th 5th 3rd 4th equivalent fractions 3.NF.3 4.NF.1 3-act task

Does it pay to get educated?
Number Sense Math and Social Studies Ratio and Proportion Data and probability
 Why should students do well in school, graduate high school, or go on to college?  In this activity median earnings by various education levels are explored.  Students compare t...
bar graph data analysis 6.RP.3 6.SP.5 6.SP.3 7.SP.4 6.NS.3 6.SP.4 MP1 MP3 comparisons 5.NBT.5 6th 7th 8th 5th Math and Social Studies Number Sense Ratio and Proportion 4.OA.2 4.OA.2

So just print some more money!
Number Sense Math and Social Studies Current events Ratio and Proportion Data and probability
                     What's the big deal with our deficit? Do we actually borrow money to cover our debt? If we do, imagine the interest charges? Help your students...
percent deficit debt 6.NS 6.RP 7.EE MP8 8.F HSF-IF 6th 7th 8th HS MP5 MP4 revenue expenses stacked bar graph money

Who's going back to school?
Algebra Number Sense Math and Social Studies Ratio and Proportion Data and probability
Students look at the past and present populations of the U.S. and the past and present population of school attendees to calculate the percentage of the population that are enrolled in K-12 school...
ratio percent data analysis percent increase 6.RP 7.RP 6.EE 7.EE 6.SP 7.SP 6th 7th 8th

Stacking Jack
3-act tasks Data and probability
Act One: Check out the video slide show.  What questions do you have? Suggested Question: How many different ways can I stack Jack?  That is, how many different color arrangements...
permutation combination arrangement 7.SP.8 7th 8th HS HSS-CP.B.9 3-act task

What's the answer?
Algebra Number Sense Current events
Image by Twitter user @pjmdoll.  Math doesn't usually create a buzz on Twitter.  This past week this post did just that.  People argued online about whether the answer was 16 or...
5.OA 6th 7th 8th HS 5th HSA.SSE.A.1 order of operations PEMDAS BOMDAS 1 6.EE. 5.OA.1

Are original movies better than their sequels?
Algebra Number Sense Ratio and Proportion Data and probability
We've gathered some data on movie ratings and their sequels and asked students to analyze the data, decide on some analysis and debate (with their mathematical data) which are better ... the origi...
line graph 6.SP.5 random sample population 6.SP.3 7.SP.4 6.SP.2 6.SP.4 7.SP.1 7. SP.3 box whisker plot HSS.IC 6th 7th 8th HS 7.SP.B HSS-ID HSS.ID.A.1 HSS.ID.A.2 HSS.MD HSS.ID.A.3 HSS.IC.A.1 7.SP.A histogram 6.SP.A HSS.CP.A 6.SP.1 HSS.ID.A.4 conflict movies

Bears Ears revisited
Math and Social Studies Current events Data and probability
There is some beautiful land in Utah that was changed last year from federally protected land to Utah overseen land.  The buttes of Bears Ears (shown above) and the surrounding territory cont...
percents reading charts ratios MP3 6th 7th 8th HS 6.RP.A 7.RP.A percent change HSS-ID.A HSF.IF.C implications history

Point of view
Geometry Math and Art
If you have a set of cubes for your classroom, this would make a great group hands-on project. Its an old puzzle but the activity deserves a revisit. Below are two straight-on images of my ...
8.G 6th 7th 8th HS 5th 4th HSG.CO.A 4.G.A HSG.MGA parallel perspective line of site

Louisiana
Algebra Number Sense Math and Science Math and Social Studies Current events Ratio and Proportion
We recently watched the approach of Hurricane Barry and worried about the fate of Louisiana. After the devastation of Hurricane Katrina, what would another powerful hurricane do to this fragile ...
5.MD HSF-IF HSA-CED 6th 7th 8th HS 5th 6.RP.A 7.RP.A HSM climate change 6.GA
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