Conceptual Math the Common Core Way: Addition and Subtraction Strategies
Ms BBZ
1.1k Followers
Grade Levels
K - 3rd
Subjects
Resource Type
Standards
CCSS1.NBT.C.4
CCSS1.NBT.C.5
CCSS1.NBT.C.6
CCSS2.NBT.B.5
CCSS2.NBT.B.6
Formats Included
- PDF
Pages
31 pages
Ms BBZ
1.1k Followers
Description
This is a full presentation for parents to help them understand our "new" problem-solving strategies and help their kids with their work, as we transition to the Common Core. So often, I have parents say things like, "I have NO idea what my child is doing with all those tally marks," or, "Why aren't you teaching the "up and down" (algorithm)?" We didn't learn to add and subtract this way and it's the #1 thing parents are confused about at conferences. I included a quick tips cheat sheet for parents as a take away. I've seen HUGE growth in my students whose parents attended the seminar. Their children are much stronger problem-solvers and are more flexible in their solving strategies!
The presentation includes easy-to-understand information on the continuum of learning for math students K-2 - how students move from concrete manipulatives to solving math in their heads. It includes an explanation slide on at least six different strategies for solving addition and subtraction with re-grouping and without, including base ten blocks, using a 100 chart, adding on a number line, and expanded form.
It could also be great for professional development as your state, county or school adopts Common Core!
This presentation covers standards in, Number and Base Ten (NBT 1.NBT and 2.NBT) and Operation and Algebraic Thinking (1.OA and 2.OA).
The presentation includes easy-to-understand information on the continuum of learning for math students K-2 - how students move from concrete manipulatives to solving math in their heads. It includes an explanation slide on at least six different strategies for solving addition and subtraction with re-grouping and without, including base ten blocks, using a 100 chart, adding on a number line, and expanded form.
It could also be great for professional development as your state, county or school adopts Common Core!
This presentation covers standards in, Number and Base Ten (NBT 1.NBT and 2.NBT) and Operation and Algebraic Thinking (1.OA and 2.OA).
Total Pages
31 pages
Answer Key
N/A
Teaching Duration
N/A
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Standards
to see state-specific standards (only available in the US).
CCSS1.NBT.C.4
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
CCSS1.NBT.C.5
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
CCSS1.NBT.C.6
Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
CCSS2.NBT.B.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
CCSS2.NBT.B.6
Add up to four two-digit numbers using strategies based on place value and properties of operations.
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