The Volcano Kilauea is continuing to spew molten lava and ash on the island of Hawai’i. This volcano is on the tip of the southern most Hawaiian Island. Is that significant? In this activity students note the descending ages of…

Sunday, April 22nd is Earth Day – There is so much to bring to your classroom to support recycling, conserving resources, studying climate change and protecting our planet. Have you seen more Monarch butterflies lately? – Students read charts, do a little research, and make observations…

In preparation for the Boston Marathon, we thought that an analysis of running speeds might be appropriate.Have you heard of The Six Million Dollar Man? He was the character in a science fiction show about an astronaut that was rebuilt,…

Probably most of us have heard of and even used hexadecimal color codes. Don’t you wonder why their number descriptions really make sense? In this activity we first ask students to color in our Golden Spiral by giving them the…

April Fools Day ideas – We have two strange mathematical riddles to decipher; a “why does this work?” task using the Ghost Whisperer; and Robert Kaplinsky’s Foil Prank. Take your choice! MP.1, MP3,4.OA, 5.G, 8.EE, 8.SP Peeps – Students estimate the number of Peeps sold…

What do you wonder about these recipes for coloring? What would happen if I used the wrong recipe (i.e. cake mix instead of egg dying) for coloring my eggs? Do all of the recipes (cake, icing, and eggs) have basically…

Green, green river – They’re doing it again. In Chicago, the local plumbers union “dye” the Chicago River emerald green. Students learn the meaning of PPM (parts per million) and attempt to figure out how much dye is used to sufficiently…

Use the need for cleanliness during flu season to engage your students. Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs? In this 3-act activity we’ve asked students to consider whether these claims…

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity. Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed. Let your students watch this video to get a feel for the…

Will we have a 29th of February this year? How can you tell? Students work with a flow chart to deduce what years are going to be leap years. They learn about the exact measurement of a solar year and…

Graphic generously supplied by GraphicNews.com Starting February 18th a new Olympic sport will be televised … Big Air Snowboarding. Some of your students may be officianados of snowboarding. Using this activity could be an opportunity to let those students shine.…

Which Sweet Heart candies are the best deal? – Students decide which quantity of Sweet Heart candies is the best deal. Ratio tables, unit ratios, devising convincing arguments. 6.RP.2, 6.RP.3, 7.RP.2 Sweetheart Candies – unit rate and ratio activity using those little candy…

What’s your guess? How fast are the number of daylight hours changing each day? Will the changes be dramatic or subtle? Students make guesses; compute how long, on average, the change in daylight hours should be; play with a cool…

When the weather person talks about wind chill did you ever wonder how they calculate that number? In this activity students use the National Weather System chart to gauge wind chill, examine the patterns that correlate increasing wind and/or decreasing…

On Wednesday, January 3rd, 2018, Earth will be as close as it gets to the Sun during its orbit. Shouldn’t that make this the warmest time of the year? In this activity students become familiar with the terms perihelion and aphelion as they calculate…