Math
Reviewing Addition and Subtraction Strategies!!!
Mathematics is not about numbers, equations, computations, or algorithms; it is about understanding... - Anonymous
It's not that I'm so smart; it's just that I stay with problems longer. - Albert Einstein
What to do when your child says "I don't get it"
• Draw it out • Look for a pattern • Reread the problem • Underline or highlight important words
• Tell the problem in your own words • Use objects to act it out • Work backwards • Chart it out
• Guess and check
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We're jumping into Multiplication this year!!! :D
We're observing how we can use strategies and visuals, such as arrays, equal groups, repeated addition, and number lines, to solve one and two-step multiplication and division problems. Look for real life arrays to reinforce this concept as well as practice skip counting by 2s, 5s, 10s, and 25s. We're introducing 0s, 1s, 2s, 4s, 5s, and 10s multiplication facts! We will learn some multiplication strategies along the way. Below is a chart similar to the one your students have in class for reference and memorization.
Place Values and Regrouping Ones, Tens, and Hundreds
More Multiplication and Division
(Use a Rule, Build Down, Build Up, Last Facts, 2-Digit by 1-Digit)
Focus TEKS: This unit has three goals.
The first goal is for students to add to their repertoire of multiplication and division strategies with the Use a Rule, Build-Down, and Build-Up multiplication and division fact strategies.
The second goal is for students to extend the fact strategies they’ve learned to help them multiply a two-digit number by a one-digit number. They should be encouraged to look for strategies involving mental math, partial products, area models, and/or properties of multiplication.
The final goal is for students to know that multiplication and division is more than just computation. Students must also learn how to solve story problems related to these operations, including those involving multiplicative comparisons. They must also represent relationships in story problems and be able to explain strategies used to solve problems using concrete objects, pictorial models, and number sentences.
Multiplication and Division Website Games:
Starting January 8 - Digging Deeper into Addition, Subtraction, Data Analysis and Rounding/Estimation
Students revisited strategies they learned in 2nd grade for adding and subtracting with 2-digit numbers, and they began building fluency with these strategies. In this unit, students extend those strategies to adding and subtracting with 3-digit numbers. The goal is for students to be fluent with adding and subtracting with 2- and 3-digit numbers by the end of the school year. In order to be considered fluent, students need to become flexible with their strategy choice as they practice adding and subtracting efficiently and accurately. If you observe a student using one and only one strategy for every problem, they are not demonstrating computational fluency.
The second goal is to solve a variety of story problems related to these operations. They must also represent the relationships in story problems and be able to explain strategies used to solve problems using concrete objects, pictorial models, and number sentences.
The third goal is to create a variety of data displays including frequency tables, dot plots, pictographs, and bar graphs. Students will interpret these data displays as they solve one- and two-step problems to reinforce their understanding of addition and subtraction.
Rounding and Estimating 2 and 3 digit numbers
Addition and Subtraction Strip Diagram practice and videos: https://www.mathplayground.com/ThinkingBlocks/thinking_blocks_addition_subtraction_1.html
Geometry
Classify and sort two- and three-dimensional figures, including cones, cylinders, spheres, triangular and rectangular prisms, and cubes, based on attributes using formal geometric language
Use attributes to recognize rhombuses, parallelograms, trapezoids, rectangles, and squares as examples of quadrilaterals and draw examples of quadrilaterals that do not belong to any of these subcategories
Measure Area
Determine the area of rectangles with whole number side lengths in problems using multiplication related to the number of rows times the number of unit squares in each row
Decompose composite figures formed by rectangles into non-overlapping rectangles to determine the area of the original figure using the additive property of area
Measure Perimeter
Determine the perimeter of a polygon or a missing length when given perimeter and remaining side lengths in problems
Determine the length of an object to the nearest marked unit using rulers, yardsticks, meter sticks, or measuring tapes