math 4 Updates
Learners will be exploring prime and composite numbers this week.
What are prime numbers? What are composite numbers? www.mathsisfun.com/definitions/prime-number.html
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Fourth graders delve into factors and multiples. We created factor turkeys and ninjas to build our skills. We've been practicing skip counting and making factor rainbows to determine how many factors a number has (within 100). We are also continuing to practice the "box method" of multiplication. Box Method multiplication is a common core multiplication strategy that really makes sense to learners. We break apart numbers into expanded form in order to be able to multiply large numbers easily. Ask your learner to show you if they haven't already.
Learners have conferences this week. We are working to define multiples and practicing multiplication with larger numbers. Learners have learned box method and the standard algorithm. We are also stressing that multiplication is a quick way to add, so learners are aware they can use repeated addition to show multiplication. For example, 47 multiplied by 4 also equals 47 + 47 + 47 + 47. This is also helpful to know because strong learners check their work. Learners can check their multiplication problem by using repeated addition.
You can help at home by practicing skip-counting at home. Fourth graders learn the standard algorithm for multiplication. We will be working with large numbers to show multiplication. They will also be working to understand multiples of ten. Lastly, learners work to solve math puzzles.
Fourth graders are learning about multiples of ten. They are also practicing multiplication with arrays (array art) and working to understand multi-step word problems.
Fourth graders define multiplication and build on prior knowledge of multiplication. We will explore multiplication on a number line, as repeated addition, as arrays, and as equal groups. Knowing multiplication math facts is crucial for 4th graders. Larger problems will slow them down without knowing the facts.
Ways you can help at home: Make flash cards or print some here Play multiplication card and dice games www.granby.k12.ct.us/uploaded/faculty/wyzika/Dice_and_Card_Games_to_Practice_Math_Facts.pdf www.sau39.org/cms/lib/NH01912488/Centricity/Domain/244/Making%20Math%20More%20Fun%20Card%20Games.pdf |
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May 2018
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