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Algebraic reasoning. The student applies mathematical process standards to identify and apply number patterns within properties of numbers and operations in order to describe relationships. The student is expected to:

- (1) recite numbers forward and backward from
any given number between 1 and 120;
- (A) skip count by twos, fives, and tens to determine the total number of objects up to 120 in a set;
- (B) use relationships to determine the number that is 10 more and 10 less than a given number up to 120;
- (C) represent word problems involving addition and subtraction of whole numbers up to 20 using concrete and pictorial models and number sentences;
- (D) understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same value(s);
- (E) determine the unknown whole number in an addition or subtraction equation when the unknown may be any one of the three or four terms in the equation; and
- (F) apply properties of operations to add and subtract two or three numbers.

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32 of 113 teaching
resources for those 'aha' moments

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#### Open-ended Math Problem Solving - Grades 1, 2, and 3 (Task Card Version)

A set of 20 open-ended problem solving task cards covering a range of mathematical concepts.

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#### Black and White Number Chart 1–120

A black and white number chart showing the numbers 1-120.

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#### 100th Day Snack Template

A template for students to use to count out 100 snack items!

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#### Skip Counting by 2s, 5s, and 10s PowerPoint

A 28-page editable PowerPoint to use in the classroom when introducing skip counting by 2s, 5s, and 10s.

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#### Math Work Mats

Practice working on specific math concepts with our set of 5 work mats for students.

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#### Skip Counting by 2, 5, & 10 – Worksheet

Practice counting by 2, 5, and 10 with this skip counting worksheet.

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#### Scoot and Count: Skip Counting by 2s

A set of 20 skip counting task cards to use as a whole-class scoot activity.

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#### Counting Forwards and Backwards Within 100 - Cut and Paste Worksheet

Practicing counting forwards and backward from a given number within 100 with this cut and paste worksheet.

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#### CUBES Bulletin Board and Bookmark Set

Tackle word problems with this CUBES problem-solving bulletin board and bookmark set.

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#### 100 Day STEM Challenge

Count to 100 while fostering critical thinking and problem-solving skills with this set of 11 task cards.

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#### Moving Mathematics Activity - Skip Counting By Twos

A fun and active way to practice counting by 2s.

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#### One More, One Less Match-Up - Two-Digit Numbers

Identify one more or one less of a given 2-digit number with this set of 36 match up cards.

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#### Number Talks - Balancing Equations Task Cards

Build number sense skills with this set of 40 task cards.

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#### Number Hunt Description Cards

A set of 32 task cards that have students use their knowledge of place value to find specific numbers.

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#### 100 Action Verbs

Practice counting to 100 by 1’s and 10’s with this set of 24 action cards that get students moving, reading, and writing.

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#### One More, One Less Worksheet

Practice foundational addition and subtraction facts using the concepts of one more and one less.

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#### One More, One Less - Cut and Paste Worksheet

Practice adding and subtracting 1 from a given 2-digit number in this cut-and-paste worksheet.

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#### Grade 1 Daily Warm-Up – PowerPoint 1

An 82-slide PowerPoint presentation containing a variety of quick warm-up activities.

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#### Skip Counting to 100 - Card Game

Practice skip counting by 2, 5, and 10 with this card game for small groups.

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#### Fact Family Find and Flip - Addition and Subtraction Up to 20

Addition and subtraction game cards demonstrating the relationship between fact families.

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#### Roll, Add, and Color - Easter Bunny

A fun roll, add, and color sheet featuring an Easter bunny.

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#### 100 Chart Missing Numbers

Practice counting forward beginning from a given number with this set of 100 charts and recording sheets.

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#### Numbers 1–20 Clip Cards

A hands-on counting and fine motor activity for younger students.

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#### Skip Counting to 120 Task Cards

Practice skip counting by 2s, 5s, and 10s with a set of 20 task cards that go up to 120.

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#### Skipping Through 120 - Worksheet

A worksheet to practice skip counting by 2s, 5s, and 10s.

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#### Roll and Color Worksheet - One More, One Less

An interactive worksheet to practice finding the number that is 1 more and 1 less than a given number.

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#### Ten More, Ten Less Dominoes

Practice adding ten more or subtracting ten from a particular number with a set of 27 dominoes.

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#### Skip Counting by 10s Dominoes

A set of dominoes to use in the classroom when learning to skip count by 10.

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#### Number Sequencing to 100 - Worksheet

A raindrop themed place value worksheet to use when sequencing numbers to 100.

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#### Place Value Work Mat

Practice place value concepts with this work mat for students.

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#### Snakes and Ladders Game - Hundreds Chart

Complete each hundreds chart by putting the missing numbered pieces into place to play a game of Snakes and Ladders.