Students will be able to identify the number that is one more or 10 more than a given number within 100.
Students will be able to describe the steps to identify the number that is one more or 10 more than a given number using visual and partner support.
Tell students the story problem, "My students are great artists. Last year, my first graders gave me 15 pictures. This year, my first graders have given me 10 more pictures."
Ask students to help you figure out how many pictures you have in all.
Tell students to turn and talk to a partner about ways to figure out the total number of pictures.
Review with students strategies for solving the problem. Show them the number 15 on the number line. Ask students how you can show that you have more pictures. Students should respond that you need to count on.
Count 10 hops on the number line to show students that you now have 25 pictures.
Tel students that today you will look for patterns in numbers that help make it easier to find the number that is one more or 10 more than another number.