Category: Algebra

These posts help students see patterns and relationships.

Where do those convention delegate numbers come from?

We hear nightly about who won delegates in state elections.  But different states have different numbers of delegates.  How is that figured out?  Is it fair? The activity: Delegates.pdf Here’s a calendar of the nomination process:  ElectionCalendar.pdf

The Boston Marathon

Monday, April 17, Patriot’s Day, is the next running of the Boston Marathon. What do you know about marathons? What do you know about the Boston Marathon? How long do you think the marathon is? Make your best guess. How…

Figuring planting dates

It’s time to get ready to plant my garden again.  But here in Boston we have to start our seeds indoors to give them a head start before we can put plants outside. How should I figure out when to plant my…

Which is the best deal?

How do you calculate and justify which deal is a better savings?  By dollars saved?  By percent saved? By some other measure? The activity: WhichDealOffersMostValue.pdf CCSS: 4.OA, 4.NBT, 4.MD.A, 5.NBT, 6.RP, 6.EE, 7.RP, 7.EE.A

How much do the tickets cost?

Ooops! I was supposed to buy 4 adult and 2 children tickets, but I accidentally entered four children and two adults … 🙂 Can you figure out how much a child’s ticket and an adult ticket actually cost?

How much snow is that?

Start out this activity with: What do you notice? What do you wonder? How many inches of snow produced that pile?  How much snow in volume is on top of the car?  How much could that snow weigh? Students try to approximate…

Who can play in this play area?

                We visited a Chic-fil-A recently.  We had a great meal and my son loved playing in the play area.  While at the play area I noticed two different signs that gave the…

Share the LOVE contest

Win a year of YummyMath!  Send us your poem, a photo, a video, or a paragraph that shows why you or your students like our work or how we’ve helped your class.  We’ll share the best, and be giving away YummyMath pencils,…

Pythagorean Triples + coloring

Pythagorean triples are not only handy for students to recognize but produce some interesting and lovely patterns.  We’ve combined a little coloring with our Pythagorean Triple pattern investigation to let your students relax while they color, view the beauty, and…

Data on the National Mall sites

Activity #1 – Look at the individuals who are memorialized on the National Mall and using fractions or percents decide what you can notice about those we honor.  If you would like to show images of the monuments and memorials to…

Opening Weekend, Star Wars: The Force Awakens

Can you tell from its opening weekend how much Star Wars: The Force Awakens will do in the long run? How much will it make in theaters?   This activity can be used anytime and is especially timely when there is a…

Soda Menorah

Happy Holidays! This Soda Menorah was on display in a Florida Target store.  It is made up entirely of 12-packs of Coca-Cola products. What questions do you have? Start out the activity by giving kids a minute or two to…

Not enough mashed potatoes

Using his famous mashed potato recipe, Brian has asked students to change decimals to fractions, to calculate ingredient measures for various-sized Thanksgiving gatherings, to explain their thinking in calculating these figures and to judge how many servings could be created…

Glowing rectangles

People spend lots of time staring at their screens (glowing rectangles).  Kids spend hours each day using their cell phones, computers, tablets, television and more.  Use that interest to motivate your student’s analysis of screen ratios and what proportions they…