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 Learning Box has a virtual version of base 10 blocks that builds in a fun practice game.  Students are given a target number and drag base 10 blocks onto the paper to represent that number.  As students add blocks, a counter at the bottom of the page shows how many blocks are currently on the paper.  This is a great way for students to digitally practice place value, counting by hundreds, tens and ones.  The Learning Box Base 10 blocks are a great example of a virtual manipulative.  They help students visually represent numbers and place value.  I like the way the slider and cups on the bottom of the page help track student progress as they drag blocks to the paper. When students get the target number, they don't start with a blank slate, instead a new target number is given and students have to figure out which blocks to add or subtract. You can adjust the level of difficulty and place values practiced by clicking on the 1, 10, and 100 circle to the left of the paper.Learning Box Base 10 would make a great center activity in the one or two computer classroom.  Students can use the digital manipulatives with the built in game or to help them represent real-world problems.Start a whole-class game with the Learning Box Base 10 blocks using a projector-connected computer or interactive whiteboard.  Students can take turns at the board solving the problem and "phone a friend" if they need some additional support. iLearnTechnology

"What it is: Any time students can dig in and discover learning for themselves, I consider it a success.  Recently I ran across the BBC's DIY build a catapult.  The site lets students explore the history behind the catapult, learn how to build one step by step and then discover principles of velocity, acceleration, force, distance and math.  With the popularity of games like Angry Birds, I think a lesson in the science and math behind the catapult is in order.  I like the step-by-step nature of this site and the way that kids are guided through a series of directions. How to integrate BBC Build a Catapult into the classroom: Begin with a time of inquiry where students can inquire into how catapults work, what they can launch, what they have been used for in the past and the science and math behind the catapult.  This site will help answer a lot of their questions and even prompt some additional questions.  Students can follow the step-by-step directions for constructing their own catapult.  Give students the opportunity to test their catapults, using the science and math concepts behind the catapult to predict where object will land based on angles and mass.  The science section of the site does a fantastic job of illustrating vertical velocity, horizontal velocity, the circumference of a circle, acceleration, force and mass.  These can be hard to understand concepts on paper (or in textbooks) but when students can see the concept illustrated and apply it, they will begin to build a framework of understanding. After students understand the concepts of building a catapult, ask them to try building a catapult out of different types of supplies, do some energy sources work better than others?  Ask students to think about objects in our modern-day lives that use the principles or science used in a catapult. Students can access this site from classroom computers as a learning/building center or go through the steps as a class using a projector-connected compu

A great idea for using Voicethread in a way that is engaging.