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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 4–6
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 4–HS
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 4–HS
Growth of Facebook
In this activity, students analyze and graph the numbers and decide if Facebook's growth in the first 20 years has been linear, exponential, meteoric, or something else. Will...
Algebra
Number Sense
Grades 6–HS