Learning With Maestra Kiley |
|
Learning Objective: Students will use concrete materials and concepts of addition to model the Commutative, Associative, and Identity Properties of Addition.
Essential Understanding: Some real-world problems involve joining, separating, part-part-whole, or comparison can be solved using addition. Two or more numbers can be added in any order; and the sum of any number and 0 is that number. Vocabulary: addends, sum, Commutative (Order) Property of Addition, Associative (Grouping) Property of Addition, Identity (Zero) Property of Addition. |
|
Learning Objective: Use a hundred chart to add two-digit numbers and develop mental math strategies.
Essential Understanding: Patterns on a hundred chart can be used to add numbers and to develop mental math strategies and number sense. Vocabulary: decomposition (breaking numbers apart), compensation (taking from one number and giving it to the other) Look below for ADDITION STRATEGIES |
|
Learning Objective: Solve problems by adding with mental math.
Essential Understanding: There is more than one way to do a mental calculation. Techniques for doing addition calculations include decomposition and making tens through compensation. (See above for ADDITION STRATEGIES. These can be done in one's head) 5 Minute ACTIVITY: Have your child add two 2-digit numbers in their head while you are driving in the car. You can give them problems where the ones digits make tens (23+37) or where they may have to decompose the number in another way to add it mentally. Have them tell you what they are thinking when they add. |
|
Learning Objective: Round two-digit and three-digit numbers to the nearest ten or hundred by comparing to the number halfway between or by using place value.
Essential Understanding: Rounding is a process for finding the multiple of 10, 100, and so on, closest to a given number. Vocabulary: round 5 Minute ACTIVITY: Draw your child's attention to times when rounding is appropriate. For example, at the grocery store, have them round prices to the nearest dollar (100) or nearest dime (10). |
|
Learning Objective: Solve problems by estimating sums.
Essential Understandings: There is more than one way to estimate a sum. Rounding gives one way to estimate sums by replacing numbers with other numbers that are close and easy to compute mentally. Vocabulary: estimate, compatible numbers (numbers that are easy to compute mentally) 5-Minute Activity: Give your child an addition problem using 2-digit or 3-digit numbers orally. Have them round the numbers out loud to easier numbers (usually a number ending in 0). Then have them add the estimations together. |
|
Learning Objective: Add 2-digit numbers using a variety of addition strategies.
Essential Understanding: These addition strategies allow an addition problem to be broken into simpler calculations based on place value. Vocabulary: None 5 Minute Activity: Complete one addition problem on paper. Have your child "teach" you their strategy out loud. Have them tell you what they do first, then, next, last. Ask them to explain how they know that they are correct. |
|
Learning Objective: Add 3-digit numbers using place-value blocks or pictures and record the results.
Essential Understanding: Models and addition strategies for adding 3-digit numbers are just an extension to the hundreds place of the models and standard algorithm for adding 2-digit numbers. Vocabulary: None 5-Minute Activity Give your child a simple 2-digit addition problem to work through. Then use the same numbers, but add a hundreds digit to them. Have your child explain the steps of their thinking out loud as they walk through the problem. Point out to them that the only difference is that now you have hundreds to work through. |
|
Learning Objective: Add 3-digit numbers using a variety of addition strategies.
Essential Understanding: Models and addition strategies for adding 3-digit numbers are just an extension to the hundreds place of the models and standard algorithm for adding 2-digit numbers. Vocabulary: None 5-Minute Activity See 2-7 suggestion |
|
Learning Objective: Add 3 or more 2-digit and/or 3-digit numbers using a variety of addition strategies.
Essential Understanding: Three or more whole numbers can be added in any order (commutative/associative properties) Vocabulary: None 5-Minute Activity Ask your child to add a combination of three numbers with either two digits or three digits. Have them tell you which two numbers they choose to add together first. Why did they choose those two? Have them walk through their thinking out loud. |
|
|
|
|