1MA.A.1 extend the count sequence to 120; read, write, and represent numerical values to 120; compare numerical values to 100 (1.NR.1)
1.a count within 120, forward and backward (by 1s and 10s), starting at any number; in this range, read and write numerals and represent a number of objects with a written numeral (1.NR.1.1)
1.b explain that the two digits of a two-digit number represent the amounts of tens and ones (e.g., 23 is the same as 2 tens and 3 ones or 1 ten and 13 ones) (1.NR.1.2)
1.c compare and order whole numbers up to 100 using concrete models, drawings, words, and the symbols >, =, and < (1.NR.1.3)
1MA.A.2 solve real-life addition and subtraction problems within 20; explain the relationship between addition and subtraction and apply the properties of operations (1.NR.2)
2.a solve addition and subtraction problems within 20 using a variety of strategies (1.NR.2.1)
2.e use the meaning of the equal sign to determine whether equations involving addition and subtraction are true or false (1.NR.2.5)
6.d ask questions and answer them based on gathered information, observations, and appropriate graphical displays to compare and order whole numbers (e.g., picture graphs, bar graphs with up to 3 categories) (1.MDR.6.4)
Counting and Representing Numbers (1MA.A.1, 1.NR.1, 1.NR.1.1)
Number Hunt: Have a “number scavenger hunt” where you give your child a number (e.g., 27) and ask them to find it around the house or on street signs. You can also do this in the grocery store by pointing to various numbers on labels and asking them to find them.
Counting Objects: Grab small objects (like buttons, toys, or even fruit) and ask your child to count them up to 120. For a fun twist, count by 10s or 5s and see if they can keep up!
Write Numbers: Help them practice writing numbers from 1 to 120. You can make it more engaging by turning it into a coloring activity where they color a number chart or write each number in a different color.
Understanding Two-Digit Numbers (1.NR.1.2)
Tens and Ones with Blocks or Legos: Use blocks or Legos to represent tens and ones. For example, show that 23 is 2 groups of ten and 3 ones by grouping the blocks. This can be a fun visual way to learn the concept of place value.
Tens and Ones Game: Create a game where your child rolls two dice. The first die represents the tens place, and the second represents the ones place. For example, a roll of 2 and 4 would represent the number 24. They can write the number down and practice explaining it (e.g., “This is 2 tens and 4 ones”).
Comparing and Ordering Numbers (1.NR.1.3)
Number Line Jumping: Create a large number line on the floor with tape (or use a printed one) and have your child jump to specific numbers in sequence. You can also compare two numbers by having them jump from one to the other, using the symbols >, =, and < to describe the relationship between them.
Number Cards Comparison: Write numbers on cards (e.g., 23, 45, 56). Lay out two cards at a time and ask your child to compare them using the symbols >, =, or <. For example, "Which number is larger, 45 or 23? Which symbol should we use?" This will also help reinforce their understanding of order.
Addition and Subtraction (1MA.A.2, 1.NR.2, 1.NR.2.1)
Real-Life Math Problems: Turn everyday situations into addition or subtraction problems. For example, "We have 7 apples. If we buy 3 more, how many do we have?" or “I had 15 cookies, I ate 4, how many are left?” Use toys, fruits, or objects to make these real and interactive.
Math Stories: Create simple math stories together. Start by saying, “There were 10 birds on the fence. 3 flew away. How many are left?” Encourage your child to tell you their own math story, practicing addition and subtraction.
Addition/Subtraction Chart: Draw a chart with different addition and subtraction problems (e.g., 5 + 7, 12 - 4). Let your child choose which one to solve next, using objects or fingers to help if needed.
Understanding the Equal Sign (1.NR.2.5)
Equation Truth or Lie Game: Write simple equations (like 5 + 2 = 7 or 8 + 3 = 12) and ask your child if the equation is true or false. You can add in some tricky ones to make it more fun. For example, “Is 5 + 2 = 7 true or false?” This helps them understand the meaning of the equal sign.
Balance Scale: If you have a toy balance scale, use it to demonstrate the concept of equality. Place objects on each side to show that both sides need to balance for the equation to be true. For example, “If you put 4 blocks on one side, how many blocks should we put on the other side to make it equal?”