Lesson plans from the SMARTExchange to be used with the Everyday Math Curriculum. This search was done for 1st grade but can be done with any grade level. They are sorted by Unit and Lesson.
These are great to go with stories that have lessons that were created or for you to create your own. It lets them see the real place where the stories is set.
BrainPop Jr. is in the BrainPop family of websites. It features educational videos on a wide variety of topics, from health to math and literacy. Students love watching the videos, and then it includes followup activities, such as quizzes, games, and even jokes. It requires a subscription for some videos, but others are free.