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19 results for "addition"
Autumn Owls Beginning Addition
Pre-K - Kindergarten
Objectives Counting & Cardinality Understand that the last number name said tells the number of objects counted. The number of objects is the same regardless of their arrangement or the order in which they were counted. Operations & Algebraic Thinking Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem. Materials Needed Large number cards Autumn owl Autumn Owls Addition worksheet Construction paper Scissors Chart paper or whiteboard Bulletin board (optional) Stapler (optional) For the Extension Activity: Autumn Owls Partner Game Scissors Paper clips Pencils Zip-close bag Introduction Hold up the large number cards one at a time, going in order from 0 to 10. Prompt students to say each number aloud with you. Then mix up the cards and have students practice identifying the numbers out of order.
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Place Value Addition
1st Grade
Objective
- Use place value blocks to solve addition problems.
Place Value: Addition Within 1,000
3rd Grade
Objective
- Fluently add and subtract within 1,000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
Turnaround Addition Facts
1st Grade
Objective
- Apply the commutative property of addition (e.g., if 6 + 4 = 10, then 4 + 6 = 10 is also known) when adding numbers together and solving for a sum.
Game Hoop Addition
Kindergarten
Objective
- Children will practice addition facts to 10.
Addition Strategies: "Make 10"
1st Grade - 2nd Grade
Objective Operations & Algebraic Thinking Using strategies to add and subtract fluently within 20 (e.g., counting on, making ten, decomposing or creating equivalent sums) Materials Needed “Make 10” frame Place Value Blocks Number line “Spin-To-Build” spinner “Build a Sum” record sheet Paper clips Pencils Introduction Pair students with partners, and give each pair 10 ones cubes and 1 tens rod from the Place Value Blocks set. Challenge students to see how many ways they can “make 10” in two minutes (e.g., 2 cubes + 8 cubes, 3 cubes + 7 cubes, etc.). Invite students to share their answers and compare. Provide the “Make 10” frame and have students complete it. Model the problem created in the frame. Ask, “How can I find out how to make 12? 14? 18? Can I start from 10? Is it faster?” Note: Use Place Value Blocks to show visual representations of two-digit numbers. For example, 14 is 1 tens rod and 4 ones cubes.
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Valentine Add & Solve
Pre-K - Kindergarten
Objective Operations & Algebraic Thinking Solving addition and subtraction word problems using objects or drawings Materials Needed “Valentine Add & Solve” mat Number tiles template Addition strips template Candy hearts, small red buttons or pom-poms (10 per student) Posterboard Pocket chart Tape Glue Scissors Preparation Print the “Valentine Add & Solve” mat, number tiles template and addition strips template. Make enough copies for yourself and each student in your class. Then cut out the number tiles and addition strips. Take one mat, one set of number tiles and one set of addition strips and mount them on posterboard so you can use them in a pocket chart.
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Wild About Word Problems
1st Grade - 2nd Grade
Objectives CCSS Math/Operations and Algebraic Thinking: 1.OA.1, 1.OA.2 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing with unknowns in all positions by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20 by using objects, drawings, and situations with a symbol for the unknown number to represent the problem. Materials Needed Animals on Board by Stuart J. Murphy Wild Animal Counters or other animal manipulatives Animal Story Problems and answer key Create-Your-Own Animal Story Problems Easel, document camera, chart paper, chalkboard or whiteboard [to display problems] Introduction Read aloud Animals on Board by Stuart J. Murphy. As you read, encourage students to help you solve the word problems that are presented in the story. Then point out how the problems are represented in numeric form to show the sum. For example, you might say, “There were three tigers. Along came two more. 3 + 2 = how many?”
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Add It Up!
Kindergarten
Objective CCSS Math: Operations & Algebraic Thinking K.OA.A.1: Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions or equations. Materials Needed Animals on Board by Stuart J. Murphy Ladybug counters Number tiles Leaf mat Dice (two for each pair of students) Scissors Introduction Read aloud Animals on Board by Stuart J. Murphy. As you read, point out to students that the truck driver is spotting two groups of the same animal and adding them together to find out how many of that animal there are. Challenge students to solve the addition problems along with you as you read.
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Multistep Word Problems
3rd Grade
Objectives CCSS Math: Operations & Algebraic Thinking 3.OA.D.8: Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. 4.OA.A.3: Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. Materials Needed Cardboard box or posterboard, cut into an outline of a bus (optional) Whiteboard or chart paper Tim’s Yard Work flyer Neighborhood Jobs reproducible Neighborhood Jobs Answer Key Preparation Print out a copy of the Tim’s Yard Work flyer and the Neighborhood Jobs reproducible for each student in your class. (You can also display the flyer on a document camera.) Introduction Instruct students to listen very carefully to the following story problem: Mr. Smith is driving a bus. At first, the bus has no passengers. At the first stop, 10 passengers get onto the bus. At the second stop, 2 passengers get off the bus. Then 4 passengers board the bus. At the third stop, half the passengers get off the bus. Pause for a few seconds. Then ask, “Now...what is the name of the bus driver?” Most students will likely react with surprise at this question, but a few will remember that you stated who was driving the bus at the beginning of the story problem. Affirm that the name of the bus driver is Mr. Smith. Ask students to raise their hands if they were calculating the number of passengers getting on and off the bus. Explain that, although this story problem was a riddle with a surprising twist at the end, those with their hands raised were actually calculating a multistep math problem that involved addition, subtraction and even division. Point out that this exercise is also a good example of why it is helpful to read the whole problem first in order to find out what information is needed to answer the question.
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Fall Skip-Counting Fun
1st Grade - 2nd Grade
Objectives Using strategies to add and subtract fluently within 20 Skip-counting by 2s, 5s, 10s and 100s Understanding that skip-counting is a faster way to count objects in a group Materials Needed Christopher Counting by Valeri Gorbachev Acorn Number Cards Counting by 2s Number Line Pumpkin Number Cards Counting by 5s Number Line Lakeshore Glue Sticks Fall Skip-Counting Fun Addition Practice Pointer or yardstick Scissors Introduction Read Christopher Counting by Valeri Gorbachev. Talk to the students about how excited the main character is about counting. Ask, “What are some objects that Christopher counted?” Then ask, “What are some objects that you can count?” Point out that Christopher was counting by 1s. Explain that students can count objects faster by skip-counting.
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One More, One Less
Pre-K
Objectives
- Children will develop number sense.
- Children will practice simple addition and subtraction.
Pronoun Practice
1st Grade - 2nd Grade
Use personal, possessive and indefinite pronouns (e.g., I, me, my, they, them, their, anyone, everything). Materials Needed: pronoun cards, board, flip chart or document camera; The Fire Cat by Esther Averill; Pronoun Search practice page; pencils or highlighters; index cards. Introduction: Display the pronoun cards on a board or document camera. Tell students that you are going to read aloud The Fire Cat by Esther Averill. Before you read, ask students to help you identify different pronouns as they come up in the story. Explain that the names of the characters are proper nouns (e.g., Pickles and Mrs. Goodkind), but the author often refers to them again by using pronouns, such as he, she, her or him. The author also may use possessive pronouns, such as hers or his, to explain that something belongs to a character. In addition, Mrs. Goodkind refers to Pickles by using the pronoun you instead of always calling him by name.
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Fact Family Trees
1st Grade
Objective Students will identify addition and subtraction fact families to 10. Materials Needed Unifix® Cubes (or other linking cubes) Whiteboard or chart paper Marker Fact Family Work Mat Tree trunk template Apples template Baskets template Construction Paper - 9" x 12" (brown, red and green) Construction Paper - 12" x 18" (light blue) Scissors Glue Preparation: Reproduce the tree trunk template on brown construction paper, the apples template on red construction paper, and the baskets template on green construction paper. Each student needs one tree trunk, one set of four apples, and one basket. Introduction Introduce or review the concept of fact families with your students. Tell students that understanding fact families can help them remember related math facts. Use three linking cubes to demonstrate a fact family. Say, “If you know that 1 (hold up one cube) + 2 (attach the other two cubes) = 3, then it’s easy to remember that 2 + 1 = 3 (continue to demonstrate with the cubes), that 3 - 2 = 1, and that 3 – 1 = 2. They’re all related!” Write the four equations on the board or chart paper to reinforce the concept.
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Friction Fun
4th Grade
Objectives Students will understand Newton’s First Law of Motion. Students will understand friction’s effect on moving objects. Materials Needed “What Is Friction?” information page and experiment sheet Books Sandpaper (one strip, approximately 4" - 5" long, for each group) Tape measure (one for each group) Toy cars (one heavier car and one lighter car for each group) 2" x 4" wood boards (each approximately 6" long for each group) Introduction Explain to students that Newton’s First Law of Motion states that an object at rest will remain at rest and an object moving in a straight line will continue to move in that direction unless an outside force interferes. Demonstrate this by setting a toy car down on a table. Ask, “Is the car moving?” (no) Reinforce that it will not move until an outside force moves it. Then push the car gently with your finger to make it roll forward, and ask students to explain what happened. (The car rolled forward because it was pushed.) Point out that the car eventually stopped rolling because it encountered friction. Tell students that friction occurs when two surfaces rub against each other. In this case, the wheels of the car rubbing against the surface of the table eventually slowed the car’s movement and caused the car to stop. In addition, heavier objects, or objects with more mass, create more friction when they come in contact with another object or surface.
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Add-A-Penguin Sums to 10
Kindergarten
Objective
- Children will practice addition facts to 10.
Get to 10: Equation Fun
2nd Grade
Objectives Students will express the same number multiple ways. Students will solve simple addition and subtraction problems. Materials Needed Chalkboard and chalk (or whiteboard and marker) Pocket chart Number cards and equation strips “Get to 10!” activity sheet Number tiles reproducible Scissors
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Elapsed Time
3rd Grade - 4th Grade
Objectives CCSS Math: Measurement & Data 3.MD.A.1: Tell and write time to the nearest minute and measure time intervals in minutes. Solve word problems involving addition and subtraction of time intervals in minutes, e.g., by representing the problem on a number line diagram. 4.MD.A.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale. Materials Needed Lakeshore Magnetic Teaching Clock Lakeshore Student Clocks - Set of 12 “Elapsed Time Word Problems” activity page Elapsed time worksheet Introduction Ask a student what time school starts. Write this time on the board under the heading “Start Time.” Then ask another student what time school ends. Write this time next to the start time under the heading “End Time.” Ask, “From the time school starts to the time it ends, how much time elapses, or passes?” (Invite students to respond and explain their reasoning and calculations.) Hold up the teaching clock and demonstrate how to set the clock at the start time and count the hours and minutes until the end time. (Hint: Move the hour hand first and have students count the hours aloud with you. Then move the minute hand and have them count the minutes.) Explain to students that you are going to teach them some strategies to help them calculate elapsed time.
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Adding Plate
Pre-K
Objectives
- Children will develop number sense.
- Children will practice simple addition.