Math Is Fun Forum

This is an ancillary post.
I taught my grade 6 students addition and subtraction on the number line last week, and we will be on decimal fractions this coming week.
Can we start from those?
I'd love it if I get responses like this. googling has been a huge stress.

If I have to give a topic, I'd give about 20 in the curriculum.
I am looking for maths games for grades 3, 4 and middle high school.
Can anyone give a suggestion with the above?
If the games can be downloaded, better. if not, no problem.
Or do I still have to post by topic continuously, which would be sort of reinventing the writing wheel?
thanks for your reply.
emekadavid