There are 10 birds sitting on a tree branch. A loud noise scares some of them away. Now there are 4 birds left. How many birds flew away?
10-__=4
(6)
This is a separate change unknown problem. You start […]
In a high quality mathematics classroom, there are a lot of charts and math pictures around as references for the students. There is also a teacher that keeps the students engaged in the lesson and pushes them to […]
As I graduated from elementary school to middle school and to high school, the more confused and complicated math would be for me. In order for me to learn math and understand it, I need to really focus and not be […]
