This educational song/video helps young children to understand that adding means to 'put together' and subracting means to 'take away' and also includes a story problem as an example for each.

This resource is a teaching video for students to watch to learn how to add integers using a number line.  The video relates adding integers to real world problems during the lessons.  

Students will begin to improve their computational fluency with combinations of 10, 15, and/or 20. They will develop strategies for combining numbers as they solve problems and play games. They will be able to apply their knowledge of these basic facts to word problems and more complicated computational problems. They will begin to use the commutative property and realize that in an addition problem the order of the numbers does not matter.

This lesson was used with a tier 3 fourth grade intervention math group to help students to progress from counting by tens and ones to combining and separating by tens and ones without skip counting. I used this Illustrative Math lesson, https://www.illustrativemathematics.org/content-standards/tasks/2106, and modified it to meet the students' needs. I modified the lesson by doing only the activities in Part 3 and then extending this by modeling the equations, that matched the hundreds chart work, with base ten blocks. I also made sure students saw the pattern in adding ones and adding tens and encouraged the proper place value terms. For example, "4 + 3 = 7 so 4 groups of ten + 3 groups of ten = 7 groups of ten which is the same as 40 + 30 = 70." I then extended this by having students add numbers with tens and ones to number with tens and ones with and without regrouping and asked them to first model it on the hundreds chart and with base ten blocks and then do the addition without skip counting (first adding the tens and then the ones and then combine the results).