If you are just getting ready to teach a lesson on DNA, you might want to use this video to introduce the concept.  It does a good job explaining what DNA is and how small or large it is.

This is a visually appealing and dramatic video that introduces your students to the study of biomes.  This is a great video to show as you get started on a new unit of ecology.

This resource would be a great introduction to your unit on cells.  It is an animation of many different types of cells and some of their functions.  There are also a few great trivia questions worth discussing with your class.

Here is a great video that introduces volcanoes.  It is very visual and the music fits.  This is the video I show to get students excited to learn about volcanoes.

This worksheet has 9 questions relating to the area.  Students will draw the area.  They will find the total area of two rectangular shapes. They will find the area of a complex shape. They will use an array to help find the area.

This author's purpose game was designed with 3rd through 5th graders in mind. There are 18 questions that students will read and then try to identify the purpose the author had in mind, to inform, persuade, or entertain. The cards can be printed front to back and then laminated. I use six of these games to split my class into 6 different groups. Included is a Snakes and Ladders board game with a March and St. Patrick's Day. If this author's purpose is taught in a different month than this, please use any old game board.

The rules I use:

In this Author's Purpose Game, students can compete against another student or computer.  Students will read a small passage and decide whether it was meant to inform, persuade, or entertain.  

This is a great video summary of WWI that can be used as a review for a WWI Unit.

This animated video discusses force and motion.  Inertia, Mass, Gravity, Force, Friction, Newtons, Energy are all discussed in this StudyJam film.

The Chelyabinsk Meteor was an awesome event that occurred in Russia.  This video explains the ins and outs of this meteorite impact.