# Circle formula

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Circle Formulas that are frequently used. The symbolic notation is briefly explained, and the parts are color coordinated. I'd love to print this off and hang it while teaching geometry!

The Secret Crochet Circle Formula (and how to tweak it)

Circle Theorems – Maths Poster

What a Great Site ! Everything you Need to Know about Crochet : patterns, how much yarn you need, measurements for different ages, etc!

Simple anchor chart for reference to circle formulas. Formulas include: Area of a circle Circumference (using both diameter and radius) Radius *Abb...

In this collaborative activity celebrating Pi Day, students work with the circle formulas to find area, circumference, radius and diameter. Each pennant also includes a Fun Fact that students can read as they complete their circle problems. Once a pennant is complete, it can be hung along a string in your classroom to celebrate Pi Day!

The Secret Crochet Circle Formula (and how to tweak it)

Circle Formulas include finding segment lengths and arc measures all summarized nicely on one page. An equation bank is located at the bottom of the page to help students find the formula for each figure. Differentiation includes a worksheet with an equation bank and another worksheet without the bank.Page 1: Using Circle Formulas to solve for a variable for each figure with bankPage 2: Answer KeyPage 3: Using Circle Formulas to solve for a variable for each figure without a bankThis…

To celebrate Pi Day, I created three fun activities that let kids get artsy while not losing a day of learning. That one above is a Pi Day Pennant for middle and high school students with area and circumference problems and fun pi facts on each pennant. Some of the circle problems ask students to combine their understanding of the two circle formulas by finding area given circumference, for example. A fun challenge!

yarn marker True circles by Shelley Husband