Can you create a fireworks display on your calculator?

Let your students experiment with their graphing calculators to create a nice 4th of July display?  We've written a brief activity that questions students about manipulating parabolas, adjusting their calculator windows, and helping them celebrate the Fourth. Or consider using Desmos or Geogebra to create these fireworks. Enjoy!

Dog years

Jorge the dog

Jorge the dog

My dog, Jorge, has just turned 10 years old.  He seems like a puppy to me but I wonder how old he is when compared to a human's age.  He's definitely not 70 or is he?  Hmmmmmm ...

Read tables and graphs, describe relationships between variables and consider proportionality:

What’s with the plovers?


Cute little birds.  Piping plovers are presently nesting on beaches along the Atlantic coast. Consequently beaches are often roped-off or closed to protect their nests and chicks.  Is this conservation working?  What should the numbers be like after so many years of protection?

Allow your class to appreciate the issue by viewing one of the videos that we've supplied and then do some analysis.

The longest day

Sunrise on summer solstice at Stonehenge

On Sunday, June 21st, at 12:39 pm EST, the Earth's North Pole will be tilted as far towards the Sun as it will ever be in the year.  This marks the longest day of the year and the summer solstice in the Northern hemisphere ... a time that has been revered for centuries.

In this activity, students compare length of daylight to place latitude while studying the correlation, evaluating Excel generated formulas, and appreciating the significance of this date.

Two ideas for Father’s Day

blueberry-muffinBlueberry Muffins is a short activity that asks students to change the amounts in a blueberry muffin recipe to multiples of and fractions of a ¼ cup measuring cup (multiplication and division with unit fractions).


For members we have an editable Word doc and solutions.

fathers-day-muffins.doc      fathers-day-muffins-solutions.pdf

CCSS: 4.NF.4, 5.NF.7, 6.NS.1, 7.NS.2

Thank you Mother and Father for all of those diapers

Which is a better deal, cloth or disposable diapers?  How much did you cost your parents in diapers?  In the future how much could your kid's diapers cost?   Help students realize all that mom and dad went through in buying and changing diapers.

Games with dice


Time to let students become naturally curious about probability.  In this activity students work in teams to record the frequency of rolled dice combinations. They observe the difference between experimental and theoretical outcomes and consider how sample size affects how close experimental and theoretical probabilities math up.  Although not specifically mentioned in the activity handout, consider having the entire class combine their rolling dice data.  They should see that their experimental data matches closely with actual probabilities.