From teachingchannel.org, produced by The Teaching Channel

Lesson Objective: Students estimate and measure peas and room size to learn about volume. Questions to Consider: Why is it important for students to design a plan before beginning?What different measuring approaches did students use?Ms. Slusar shares... that accuracy is not a goal of this activity. What could this particular project teach us about accuracy?Common Core StandardsMath.5.MD.4
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For estimating sums and differences of whole numbers, try out these two strategies: rounding and front-end estimation. Learn more about estimation with this step-by-step, interactive video from StudyJams. A short, self-checking quiz is also includ...ed with this link.[more]

Students learn to estimate a sum or difference by first rounding each numeral to the place specified in the problem. For example, to estimate 4,909 + 3,217 by rounding each number to the nearest thousand, first round 4,909 up to 5,000, and round 3,21...7 down to 3,000, then add 5,000 + 3,000 to get 8,000. Teacher stands at white board to model problems and explain her work. (01:49)[more]

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase, Inez is baking 50 cookies for her class and each cookie has to have four jelly beans on top. Inez has a jar full of jelly beans. She knows she needs at least 200 jelly beans, but rather than count all of the jel...lybeans, she decides to estimate to see if she has enough. (0:37)[more]

From pbslearningmedia.org, produced by Thirteen/WNET New York

In this video segment from Cyberchase, the CyberSquad is trying to get to Crab Kingdom. First, they must estimate how far the trip is in order to determine how much power they need in their underwater bikes to complete the mission. Since each vehicle... has a certain amount of power, the CyberSquad must then decide which vehicle to choose based on how much energy they estimate they will need. (4:26)[more]

Lear about guesstimating, or the art of making reasonable estimates to check your answers in Maths. Some simple examples are explained of estimating on a whiteboard.

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