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Illustrative Mathematics
Rounding to 50 or 500
In a six-problem learning activity, children are guided to solve word problems that involve rounding to the nearest ten and nearest hundred. A commentary and answer key provide different approaches that learners may take in solving the...
Illustrative Mathematics
Equivalent fractions approach to non-repeating decimals
Trying to get your class to think of decimals as fractions and vice versa can lead to interesting discussions. After all, we can usually understand quickly that 1/4 is .25 but why is 1/7 not so easy to convert? This activity looks...
Curated OER
K-5 Mathematics Module: Number and Number Sense
Reinforce number sense with a collection of math lessons for kindergarteners through fifth graders. Young mathematicians take part in hands-on activities, learning games, and complete skills-based worksheets to enhance proficiency...
Bowland
You Reckon?
Sometimes simple is just better. A set of activities teaches young mathematicians about using plausible estimation to solve problems. They break problems down to simpler problems, use rounding and estimation strategies, and consider...
Pedago Net
Acing Math
Deal me in! Elementary and middle school classes will love this selection of math games, all involving a deck of cards. From fractions to exponents to rounding up and down, the games cover such a variety of skills that your classroom...
Illustrative Mathematics
How Many Cells Are in the Human Body?
Investigating the large numbers of science is the task in a simple but deep activity. Given a one-sentence problem set-up and some basic assumptions, the class sets off on an open-ended investigation that really gives some...
NumberNut
Number Nut: Rounding Numbers to the Nearest Ten Memory Challenge
Play this online memory game by flipping cards and selecting pairs that match by rounding one of the numbers to the nearest ten. Eliminate pairs and practice your rounding skills.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Round to the Nearest Ten [Pdf]
Students will play a game using a deck of cards to further understanding of rounding to ten.
History is Fun
Jan Brett: Seashell Rounding Activity
Sharpen your rounding skills with this interactive game based on Jan Brett's, Comet's Nine Lives. Round correctly to the nearest ten and earn a sand dollar for each correct response. Immediate feedback provided.
Beacon Learning Center
Beacon Learning Center: Round About
Students learn about estimation using a number line and rounding rules through this interactive web lesson.