Math 3 Updates
We are learning about the properties of addition. We are also introducing missing addends. For example,
45 + ___ = 90. This sets up learners to learn about variables in 5th grade. It also introduced them to the commutative property in mathematics. We are also beginning to create and explore bar graphs. Bar graphs are a great visual tool to practice addition and subtraction. For example, Find the difference between the temperature on Monday and Thursday. Lastly, we begin research on "fact families." The word "commutative" comes from "commute" or "move around", so the Commutative Property is the one that refers to moving stuff around. For addition, the rule is "a + b = b + a"; in numbers, this means 2 + 3 = 3 + 2. For multiplication, the rule is "ab = ba"; in numbers, this means 2×3 = 3×2. Fact families are 3 numbers that are related, just as the people in a family are related. They make a set of related math facts. You can print and cut out fact family cards. to play games and practice your math skills! Fact Family Cards
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Third graders are perfecting their regrouping skills by practicing adding and subtracting often. They have learned addition and subtraction algorithms and strategies to build skills. Students completed math madlibs too this week. Learners are exploring the relationship between place value and regrouping. Lastly, learners are learning new academic math language such as decompose and recompose. They use these terms along with regrouping to explain addition.
Math Dictionary reference for learners Learners practiced rounding on number lines. We also explored "0" and determined 0 has an important place in mathematics. We began learning about the CUBES problem-solving strategy (see below) and started putting this strategy into practice with multi-step problems. We also had our Unit 1 assessment, performance task and exit ticket. We are learning how to show what we know in various forms.
Third graders learned how to round numbers. We also practiced rounding using number lines and defined "benchmark" numbers. We practiced estimating. We also played rounding games and learned sayings to help us remember how to round. "1-4 hit the floor, 5-9 climb the vine" and "4 or less, let it rest. Five or more, let it soar." You can help at home by practicing labeling place value: ones, tens, hundreds and 1. locating a "target" number. For example, if we want to round 432 to the nearest tens place our target number is the 3 (because it's located in the tens place). Then we look to the neighbor or "right hand man" to tell us how to round. Here the "right hand man" or 2 tells us to round down. 432 rounds to 430 if I am rounding to the nearest tens place.
More Rounding Practice The third graders continue learning about place value. We practiced building numbers with base ten blocks and identifying the ones, tens, hundreds and thousands place. We are familiarizing ourselves with academic language and note-taking. We've also been working to recognize patterns in math with our 0-99 chart. We are working on the essential questions: What is the importance of a 0 in place value? AND How do we write a number in expanded form? Look for 3rd grade math assignments coming home in Friday Folders. Assignments with a grade of 1, 2, 3, or 4 have been entered in the gradebook.
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May 2018
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