Passover will begin this year at sundown on Saturday, March 27th. Jewish families will gather to commemorate the exodus of the Children of Israel from slavery in Egypt. The celebration begins with a traditional meal, the Seder, where the story of…

What’s your guess? How fast are the number of daylight hours changing each day? Are the changes dramatic or subtle? Students make guesses; compute how long, on average, the change in daylight hours should be; and finally understand the variability in our year of daylight hours.

The date of the Presidential Inauguration this year can be written in an interesting way. What do you notice? What do you wonder? Do you think that this happens often in a year?

There is a new dog aging formula that depends on methyl markers that adhere to the DNA molecules of living things. Now we know that dogs don’t age as we thought that they did.

How much more “stufed” are they compared to Triple Double Oreos, Double Stuf Oreos or even Original Oreos. Does this look yummy to you or gross? Why are they filled with creme and not cream? Maybe Nabisco’s employees can’t spell. What do you think?

Saturday, June 20th, 2020 Sunrise on summer solstice at Stonehenge On Saturday, June 20th, at 5:44 pm EDT, the Earth’s North Pole will be tilted as far towards the Sun as it will ever be in the year. This marks the…

A Danish market found an interesting way to limit hoarding of hand sanitizer. How much are these costs in your currency? What is the unit price on these bottles? By how much (what percent) was the price increased? Is this…

We’re still learning about the coronavirus and its ability to and tendencies toward infection and spread. Students learn about the R-naught number which is a measure of infectious growth. Real-world mathematics!

Students reason about the meaning of this formula. They evaluate the formula for South Dakota and their state of choice to understand the weight of each state’s power in choosing the Democratic nominee.

Totally new activity! Let your students talk about their favorite Girl Scout cookies as they figure out what the local GS chapter really earns from these sales. Use this old graphic (where a box only costs $4.00) to figure out…

3 activities about wrapping presents: On the diagonal, 3-act by estimation with iPhone, and judging sizes and needs by estimation with man and shopping basket.

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 (and their families) understand the meaning and repercussions…

Updated! 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 schools. They are asked to draw conclusions…