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open textbooks that can be flexed for your high school

"We've launched thousands of new peer-reviewed practice problems that rigorously cover the new US Common Core State Standards and can be used in your classroom today."

"Find and use thousands of FREE games, videos, and interactives in all major K-12 subjects and aligned to the Common Core"

Coaster Crafter starts with a fun narrative about the owner of an amusement park and his daughter, who need help designing better roller coasters. They watch demonstrations of the simulator, which shows design flaws in several coasters. Then, in a series of lessons called Design Challenge, they correctly answer questions, which are clearly expressed with words and images, about relevant physics vocabulary.

These basic flashcards will give your students the repetition they need to master the very important skill of counting money.

Help the carpenter with his job. Think carefully before you cut a plank, because there are no second chances if you make a mistake. So remember the carpenter's saying: "Measure Twice and Cut Once"!

Open Educational Resources for k through 12

Perhaps you have wondered how predictable machines like computers can generate randomness. In reality, most random numbers used in computer programs are pseudo-random, which means they are a generated in a predictable fashion using a mathematical formula. This is fine for many purposes, but it may not be random in the way you expect if you're used to dice rolls and lottery drawings.

exploring games and information that connect to almost any child.

Site for everything mathematical to be analyzed. Great interactions with formulas and science.

"So you have heard about blogging with your students and you are considering taking the plunge but just not sure what or how to do it? I am here to tell you; blogging with my students has been one of the most enriching educational experiences we have had this year, and that says a lot. So to get you started, here is what I have learned:"

"Highlights for High School features MIT OpenCourseWare materials that are most useful for high school students and teachers."

"Graphs and charts are great because they communicate information visually. For this reason, graphs are often used in newspapers, magazines and businesses around the world."