Welcome to Ms. Garcia's Math Unit!Addition and Subtraction Facts to 201-20.jpegsub.jpeg1-20.jpegadd.jpeg1-20.jpeg
I am excited to discover addition and subtraction strategies for whole numbers 1-20 with my students! This unit is grounded in the concept of part-whole relationships and reiterates place value of tens and ones. We will be learning core content, but there is also time for fun and games! Math is a universal language and it is important to me that students develop skills they need to solve problems and understand the surrounding world.
Here are the big ideas your students will be learning over the next two weeks:- Students will understand strategies for adding and subtracting whole numbers 1-20.- Students will use number sentences to solve real-world problems.- Students will create their own math problem using numbers 1-20.
Family ActivityPlease complete one activity and guide sheet with your student during the Math Unit.Copies in other languages are available upon request.
Do not hesitate to contact me with questions or concerns!


The Join Machine
Practice addition facts with your student.You Need: 20 beans, buttons, chips, nuts, cotton balls, or any other household item to use as counters.Directions: Separate counters into two specified groups listed on the join machine (4 and 7) and then add your two groups together to create one large group (4+7=11). Students will start with two separate piles from the left, combine them in the middle, and count the total number as they move the counters toward the right to exit the machine. Have your student write down the number sentence and the answer to the problem.What I Need: Fill out this guide sheet using the join machine handout.Turn in the completed guide sheet to me.
OR
Race to 20 Game
Practice addition and subtraction facts with your student.You Need: A number cube (I can supply this! Just have your student ask me for one.), different colored pencils, crayons, etc.
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Directions for Addition: You and your student will compete against each other to see who can get to 20 first. Print out the race to 20 game. Your student and you will take turns rolling the number cube and adding to 20. Students can color in squares as they move from 1-20 (Ex. number cube roll of 4 = 4 squares colored). Have students record their results on this guide sheet. The first person to get to 20 wins! Please play 3 games!
For example:
1st roll: 3
2nd roll: 4
3+4=7
3rd roll: 6
7+6=13
4th roll: 2
13+2=15
5th roll: 5
15+5=20
Your student may want to regroup numbers like 7 & 6 into tens and ones (10, 3) to make addition easier.
What I Need: The completed guide sheet.

Directions for Subtraction: You and your student will compete with each other to see who can go from 20 to 0 first. Print out the race to 20 game. Your student and you will take turns rolling the number cube and subtracting from 20. Students can color in squares as they move from 20 to 0 (Ex. number cube roll of 6 = 6 squares colored). Have students record their results on this guide sheet. The first person to get to 0 wins! Please play 3 games!
For example:
Start at: 20
1st roll: 6
20-6=14
2nd roll: 2
14-2=12
3rd roll: 4
12-4=8
4th roll: 5
8-5=3
5th roll: 4
I made it to zero!
What I Need: The completed guide sheet.

Thank you for helping your child practice addition and subtraction strategies for numbers 1 - 20!