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"Free Tools for Teachers. These tools are designed for teacher-facilitated instruction, and include sample problems to give teachers instructional suggestions. For each tool you will find a short instructional video, standards alignment (including the recent Common Core State Standards), key vocabulary, and IEP goals. Select a topic below to get started. Concepts to Procedures Higher Order Thinking Identifying Fractions Order Fractions on a Number Line Comparing Fractions Unitizing with Pattern Blocks Adding Fractions with Common Denominators Unitizing Fractions on a Grid Subtracting Fractions with Common Denominators Estimating with Benchmark Fractions Equivalent Fractions Equivalent Fractions with Word Sentences Finding Common Denominators Adding Fractions with Uncommon Denominators Subtracting Fractions with Uncommon Denominators Conceptua™ Math fractions tools are partially funded through a Phase I, Small Business Innovation Research grant (SBIR) from the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD): Grant # 1R43HD061108-01. Latest News 05.28.2010 New Free Tool: Comparing Fractions! This new free tool lets students compare 2 or 3 fractions, use visual supports, and work with >, < or = signs. Try It Now! » Read more » Like Conceptua Math? Tell your friends! Featured Video Conceptua Math Overview See what's available and then get started using the tools. "

Free Tools for Teachers. These tools are designed for teacher-facilitated instruction, and include sample problems to give teachers instructional suggestions. For each tool you will find a short instructional video, standards alignment (including the recent Common Core State Standards), key vocabulary, and IEP goals. Select a topic below to get started.

Excellent post on CC

"I really enjoy Flickr, as I noted in a previous post: A Dozen Flickr Fun Favorites!. There are so many gifted photographers posting marvelous photographs. And, don't you just love photographs that are available under a Creative Commons license?"

I really enjoy Flickr, as I noted in a previous post: A Dozen Flickr Fun Favorites!. There are so many gifted photographers posting marvelous photographs. And, don't you just love photographs that are available under a Creative Commons license?

"A machine is a tool used to make work easier. Simple machines are simple tools used to make work easier. Compound machines have two or more simple machines working together to make work easier. In science, work is defined as a force acting on an object to move it across a distance. Pushing, pulling, and lifting are common forms of work. Furniture movers do work when they move boxes. Gardeners do work when they pull weeds. Children do work when they go up and down on a see-saw. Machines make their work easier. The furniture movers use a ramp to slide boxes into a truck. The gardeners use a hand shovel to help break through the weeds. The children use a see-saw to go up and down. The ramp, the shovel, and the see-saw are simple machines."

A machine is a tool used to make work easier. Simple machines are simple tools used to make work easier. Compound machines have two or more simple machines working together to make work easier. In science, work is defined as a force acting on an object to move it across a distance. Pushing, pulling, and lifting are common forms of work. Furniture movers do work when they move boxes. Gardeners do work when they pull weeds. Children do work when they go up and down on a see-saw. Machines make their work easier. The furniture movers use a ramp to slide boxes into a truck. The gardeners use a hand shovel to help break through the weeds. The children use a see-saw to go up and down. The ramp, the shovel, and the see-saw are simple machines.

"Simple Machines: These devices were all in common use for centuries before Leonardo's time. Each one makes work easier to do by providing some trade-off between the force applied and the distance over which the force is applied."

Simple Machines: These devices were all in common use for centuries before Leonardo's time. Each one makes work easier to do by providing some trade-off between the force applied and the distance over which the force is applied.

Apps, Games, and Websites rated and recommended by Common Sense Media.