Ms. Whitt
Khan Academy: Mental Math Subtraction Help. Plickers. Google Map Math: Fun in Nottingham. How Many Donuts is That? | Yummy Math. Clicking on this image will show it larger in a new window. Act One: Take a look at the picture. What is the first question that comes to mind? How many donuts is that? What information would be useful? Act Two: See pictures below. Your students can view all five pictures on this Google doc. Here is some extra information: ExtraInfo.pdf with more useful info for you to consider sharing with students. The activity guide: DonutActivityGuide.pdf For members we have teaching tips and solutions: DonutSolution+tips.pdf This activity can address many different CCSS depending on solution method, age level of students, and the conversations you are having in class.
ExtraInfo.pdf Act Three: This news clip gives the solution. Sequel: Now that you know how many donuts are in the box, what dimensions and number of rows and columns could give this exact number of donuts? Extension: How much did that box of donuts probably cost? FlexMath - Mental Math. Dan Meyer: Mental Math Girl Scout Cookies. Dan Meyer: Mental Math Volume. Dan Meyer: Mental Math Gummy Bear. Dan Meyer: Mental Math Toothpicks.