1. How much time is left?
2. Write down a guess.
Here is the link to a handout with the image for students to measure.
Also, if paper isn’t ideal, here is the link to a Geogebra applet for students to work with.
5. If a 55° central angle represented 24 seconds remaining, then what was the original timer set for?
Recognize and represent proportional relationships between quantities.
solve problems involving ratios, rates, and percents, including multi-step problems involving percent increase and percent decrease, and financial literacy problems