With this video you can easily start off a class on genetics or reproduction.  Simply propose the age old question, "Which came first, the chicken or the egg?  Discuss this a little bit with your class and see what they have to say.  How much to they understand the theory of evolution and natural selection? Then watch the video as an excellent explanation unfolds.

This worksheet reviews the concept of area and perimeter.  Types of questions include the area of irregular shape, adding the total area of two rectangles, area, and perimeter word problems, creating rectangles with the same area but different perimeters, finding the unknown sides, and length times width.

Students will first roll a number cube. This number will then let students know how many of the 10 animals need to be eliminated/subtracted. They will cross that many off. They will then create a number sentence to mathematically explain how they end up with fewer animals.

Review patterns with students.  The patterns included are skip counting, multiplication table, and input-output tables.

This website gives teachers the ability to quickly create random numbers that can be used for adding, subtracting, multiplying, dividing, order of operations, finding rules, and learning to substitute values.  The spinners can be used with 2 to 12 sections in each spinner.  You can have up to 4 spinners.  It also contains a timer in which you can quickly turn the spinners into fun and visual activities.  Watch the YouTube Video on using the spinners to see how it can be used.

This is a Smartboard large button program that displays flashcards.  I have my students in teams and we play two-minute relay games where the team selects and answers and then moves to the end of the team.  The team that wins is the one that answered the most correct multiplication or division problems. You can also select add and subtract.

Here is a very elementary video worth showing your students in K-2
grade.  It is definitely very elementary, but Sesame Street does an
excellent job discussing subtraction.  It is quite entertaining.

Save the planet by destroying the aliens quickly.  Students need to solve addition problems in order to fire the weapon.  This will surely improve their additions skills and fluency.

In this game, students can compete against each other online to see who can get their jet ski to the end, the quickest by answering addition questions.