Lesson: Adding Numbers up to 20 on a Number Line Mathematics • Second Year of Primary School

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In this lesson, we will learn how to add within 20 by jumping forward in ones on a number line.

Students will be able to

model the addition of numbers within 20 on a number line,
write addition equations matching number lines,
use a number line to count on and find a sum within 20,
count on from either addend using a number line and express a preference,
identify the largest number in an addition sentence and count on from there on a number line to find the sum.

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