Back to school spending is huge and students might not appreciate what it costs to send them back to, essentially, their job of learning. In this activity students decide what equipment and supplies are necessary, estimate how much that will…

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 blacked out. What could the numerators be? Explain your…

I have to go to the bathroom pretty badly. I have to admit that I have been holding it in for a while. Finally! I see a bathroom sign! Wait … it is in kilometers? How far is that? Should…

My dog, Jorge, has just turned 12 years old. He still seems like a puppy to me but I wonder how old he is when compared to a human’s age. He’s definitely not like an 84 year old human (12…

Lots of people enjoy coloring books. Evidently people who like to multitask can find a means of calming their energies and reach a peaceful place by simply coloring designs. Coloring in these drawings allows you to relax and just create pretty…

I came home from work to find that my son had his cars organized in a tight parking lot on our front porch. How many cars are there? Is it an array and if so, what size array could it be…

After chlorination, it has been hard to measure the quantity of pollutants in pool water. A Canadian chemist, Xing-Fang Li, has found a marker for urine that chlorine doesn’t disguise. In this activity, students calculate volume of several pools, change that…

Mother’s Day by the numbers – Mother’s Day is right around the corner and this means big business for the greeting card and floral industries. Let your students practice averages, percents, and large numbers while they analyze the statistics on Mother’s…

Uh oh! How do you find the area of a heart? Get your students to help you calculate how many sequins you’ll need to order for this mother’s day class project. The activity: BejeweledMother’sDayCard.pdf Mother’sDay-card-blank – If you want…

Saturday, April 22nd is Earth Day There is so much to bring to your classroom to support recycling, conserving resources, studying climate change and protecting our planet. McDonald’s moves toward Antibiotic-free chicken – What will the effects be on costs at the restaurant, costs in…

We have two classic puzzles for your April 1st class starters. PerplexingOne.pdf PerplexingTwo.pdf CCSS: MP.1, MP3,4.OA, 5.G, 8.EE, 8.SP For members we have solutions. PerplexingOne-solution.pdf PerplexingTwo-solution.pdf Or you might baffle and amaze your students with our Ghost Whisperer lesson.…

This is the third and final activity in the Pascal’s Triangle series. In this activity students again have the opportunity to color as they investigate Pascal’s triangle and the patterns that it shows. The activity might be used first in…

On October 16, 1995, perhaps a million black men gathered for the Million Man March on Washington. This was 32 years after Martin Luther King, Jr. gave his historic “I have a dream” speech at the Lincoln Memorial to 250,000 civil…

Rogue One has only recently come out and grossed nearly 300 million dollars in its opening weekend. We were curious about how often and how profitable the Star Wars movies have been. So we gathered data on each movie’s budget…

Every birthday I consider whether I’m in the prime of my life … like when I was 29 years old. Will this new year be a prime year? I hope so. Don’t use Google or Siri or whatever. Just see…