Here are some of the public notes of most commented upon items from the book I coauthored Flattening Classrooms, Engaging Minds. You do have to make your notes public to make posts, but I think that highlights may share whether or not they are public. I like to see the things that resonate.
These are complete mini-topics that are a week's worth of activities and lesson plans on each topic for ages 4-11. This pulls together lesson plans, interactive whiteboard resources, and printables and will be helpful for teachers in a tight or who need to quickly emphasize a topic where they know students have problems.
I love this activity finder at TES iBoard. They have more than 700 free activities that you can use with your Interactive white board for ages 4-11. You can search by topic. If you have an interactive whiteboard, you should use this site. A subscription lets you easily share the activities with your pupils and they can access them anywhere without a log on. That is very useful.