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Total solar eclipse - apparent sizes
Total solar eclipse - apparent sizes

Where will the eclipse be seen? What if you are not in the path of totality? Total solar eclipse? What is apparent size? How can the moon seem...

Algebra Geometry High School
Giant iceberg breaks off from Antarctica
Giant iceberg breaks off from Antarctica

The crack in Antarctica's Larson C ice shelf has been growing for years (2017). Has the speed of the rift's growth stayed about the same? increased? decreased? Do...

Math and Science Current events Grades 6–HS
Fireworks on your calculator
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...

Algebra Geometry Grades 8–HS
Fidget spinners - fad or lasting trend?
Fidget spinners - fad or lasting trend?

Do you recognize what these are? Are you noticing students with these gadgets? Is this a forever toy or just the newest thing? Can you tell by looking...

Current events Data and probability Grades 6–HS
Proposed southern border wall
Proposed southern border wall

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that...

Number Sense Math and Social Studies Grades 5–7
A gorgeous, glittery card
A gorgeous, glittery card

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 class...

Number Sense Geometry Grades 3–8
How did I graph this heart?
How did I graph this heart?

In this activity, students will use mathematical equations to create a heart shape on a coordinate plane. This activity encourages students to apply their algebra and graphing skills...

Algebra Geometry Grades 8–HS
Have a heart
Have a heart

Clicking on the image above will show the heart larger in a new window. Canstruction® is an event hosted in more than 150 countries throughout the world to...

Number Sense Geometry Grades 5–HS
Shrinking Toblerone
Shrinking Toblerone

New York Times photo - Credit Darren Staples/Reuters They changed it. That is so not fair ... or is it? You can check out a video news story...

Number Sense Geometry Grades 5–HS
Pascal's Triangle coloring and Probability
Pascal's Triangle coloring and Probability

Pascal's Triangle and Probability - This activity could be used to explore the probability of coin tossing results. When the combinations get too complicated to list, students can...

Algebra Number Sense Grades 7–HS
Pokémon GO!  I should have invested
Pokémon GO! I should have invested

Pikachu Pokémon GO is all the rage. News reports show people glued to their smart phones as they travel to nearby landmarks where virtual critters appear and need...

Algebra Number Sense Grades 5–HS
Flag Art
Flag Art

A little ratio art might be a fun way to get ready for the upcoming Memorial Day holiday. In this activity (Flags) students measure; create whole number ratios...

Number Sense Geometry Grades 4–8