Fibonacci coloring

Lots of people enjoy coloring books.

Fibonacci latticeFibonacci lattice

GoldenSpiral-colorGolden spiral

Pentagram-colorPentagram and Golden triangles

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 images without worrying about being artistic or the stress that a blank canvas might bring you.

We've given you colorless patterns that students can shade their own way and a lesson on Fibonacci.

Fireworks on your calculator

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

Or Flag Art!   

How many cars are there?


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 or what arrays are possible? How many rows and columns? What is reasonable, how much is too much? Below is a video version of our power point for the activity, which guides the class through steps in the activity.  You can use the video, just beware to keep stopping the video at key points as the solution appears at the end of the video.

HowManyCars from YummyMath on Vimeo.

Ideas for Father’s Day

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.

Students will compare the cost of buying disposable versus cloth diapers. They estimate how much they cost their parents in diapers and consider how much they will spend on diapers when they have a baby. This is a great math activity for Father’s Day or during the study of linear equations and introduction to systems of equations.

There is quite a bit of scaffolding built into the activity for students who might have limited experience with linear relationships and equation writing.  Depending on the experience of your students you might reduce the amount of work in the tables or omit some of the questions in this part of the lesson.

Or check out:

Father's Day Blueberry 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).

Summer Sale

Our Spring Sale was so successful that we've decided to create a similar Summer Sale for a few weeks. Happy Summer to you all!

Brian and Leslie

Saving Water Bottles

In my grocery store they now have these new water bottle refilling stations. You can simply refill your own container with water instead of buying a six-pack of bottled water. Do you think that this is a good idea?  Are they just giving away water?  Is it the same quality of water as bottled water? What if you didn't bring a bottle or cup? Or if they provide cups, what about the cost of a cup. How many water bottles are they really saving?

This activity attempts to trace the pace of this plastic bottle saving device.  How effective is it and is it worth the trouble?  This is a great task for graphing, fitting lines and solving equations, all in an in important context.