Learning how to add numbers by counting on is an important skill for elementary students. Not only does it help them with basic math concepts, but it also builds a foundation for more advanced concepts they will learn in the future. Here are some activities that teach students how to add by counting on with sums to 20.
1. Counting Fingers
One of the easiest and simplest ways to teach students how to add by counting on is by using their fingers. Start by putting up a sum, such as 8 + 5, and have students hold up the number of fingers that represents the first number in the equation (in this case, 8). Next, have them count on the remaining fingers (5 more) to come up with the total (13).
2. Number Lines
Using number lines is another effective way to teach students to add by counting on. Draw a number line on the board or use a pre-made one, starting at 0 and ending at 20. Begin with an equation, such as 12 + 5, and have students count 12 spaces to the right, starting at 0. Then, have them count 5 more spaces to find the total, which is 17.
3. Dice Games
Dice games are an enjoyable way for students to practice adding by counting on. Give each student a pair of dice and have them roll them. Then, ask students to count the dots on one of the dice, start at that number on the number line, and count on the dots of the second die. For example, if a student rolls a 4 and a 5, they would start at 4 on the number line and count on 5 more spaces to get to 9.
4. Sorting Game
For this activity, prepare 20 cards, each with a number from 0 to 20 on them. Divide the students into groups of two and give each group the set of 20 cards. Have the students shuffle the cards and lay them face down. They will take turns turning over two cards and adding them together by counting on. If they get the right answer, they keep the cards. If not, they turn them back over and let their partner play.
5. Egg Carton
Collect an empty egg carton and number each section, starting at 1 and going up to 12. Give the students small objects, such as beans or counters. Provide them with an addition equation, such as 6 + 7. They place 6 objects in any spaces in the egg carton and then count on 7 more spaces, placing one object in each space as they count. The total is the number of objects in the egg carton.
In conclusion, these activities are valuable tools to help students learn how to add by counting on with sums to 20. Incorporate them into your classroom routines to make math learning more enjoyable and effective. When students master this skill, they will be well-prepared for more advanced math concepts in the future.
