tags: HSG.C

tags: HSG.C
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Winter Solstice 2023

Number Sense Geometry Math and Science Ratio and Proportion
It is really dark out now.  Why is that? Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth's tilt and the logic of da...

What can you tell about a snowflake?

Geometry Math and Science Math and Art
As a snowflake falls from the sky, its crystal grows according to the humidity and temperatures of the air that it passes through. In this activity, students interpret a graphic that clarifies ...

Betsy Ross's 5-pointed star

Algebra Geometry Math and Social Studies Math and Art
Flag of the United States from 1777 to 1795.    In honor of Independence Day we thought it would be fun to look at one story about the first American Flag. The rough desig...

December 21, 2020 - Great conjunction

Algebra Number Sense Geometry Math and Science Current events
Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other. They are millions of miles apart but they app...

Tiny vacuum with a huge reach

Algebra Number Sense Geometry 3-act tasks
From the vacuum description and advertisement in the PDF, how long do you think its cord must be? Thanks to Brian Shoemaker, Newton, MA teacher, for the idea and pictures.

Point of view

Geometry Math and Art
If you have a set of cubes for your classroom, this would make a great group hands-on project. Its an old puzzle but the activity deserves a revisit. Below are two straight-on images of my ...

Spiraling squares - compass and straight edge

Algebra Number Sense Geometry Holidays and Annual Events Math and Art
Can you see the many spirals in this design? Students calculate the size of each increasing round of squares and consider what sort of spirals these must be. Working wit...

More eruptions on Hawai'i's Kilauea

Algebra Geometry Math and Science Current events Ratio and Proportion
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 activit...

Big Air snowboarding

Number Sense Geometry Math and Science Sports Holidays and Annual Events
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 l...

What's my angle?

Geometry Math and Science
I'm going to help save the planet by adding solar panels to my roof! Should I tilt the panels on my roof to more accurately aim towards the Sun? If so, at what angle should I use? S...
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