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Resource Name Topic (Course) Technology Type \$? Rating Browsing: All Content Browse discussions Login to Subscribe / Save Results Geoboard Measurement (Math 5)+ Java Applet Tool [14] Investigate, describe, and reason about the results of subdividing, combining, and transforming shapes using models and representations. Develop, understand, and use formulas to find the perimeter an... More: lessons, discussions, ratings, reviews,... Rectangle Properties Measurement (Math 5)+ Java Applet Tool [0] This applet examines the relationships between length, width, area, and perimeter of rectangles. More: lessons, discussions, ratings, reviews,... Playground Physics Measurement (Math 6)+ iPad Tool \$ [0] Discover and explore the physics in your own movements. Record a video of you or your friends, tap points along the way to trace a path of motion, and discover the motion, forces, and energy involved.... More: lessons, discussions, ratings, reviews,... Raindrops Measurement (Math 7)+ Java Applet Tool [0] With this applet, students can investigate the probabilities of catching different amounts of raindrops using differently-sized and -placed buckets. This investigation helps give students a sense of t... More: lessons, discussions, ratings, reviews,... Count Us In: Game 14 Measurement (Pre-Kindergarten)+ Flash Tool [0] The player has to sort the height of the players on the field. More: lessons, discussions, ratings, reviews,... Count Us In: Game 15 Measurement (Pre-Kindergarten)+ Flash Tool [1] The player has to judge the volume of different vessels. More: lessons, discussions, ratings, reviews,... Integer Bars Measurement (Pre-Kindergarten)+ Java Applet Tool [0] Compare, rotate, and combine Integer Bars, which come in different colors and lengths -- from 1 unit to 10 units. NOTE: Jill Britton discovered that a zipped version of this applet by J... More: lessons, discussions, ratings, reviews,... Develop Strategies for Mental ... Mental math (Math 1)+ Computer Tool [0] Mental math lessons and practice. Covers "compatible numbers", estimating, the Distributive Property, and finding patterns. More: lessons, discussions, ratings, reviews,... Mental Arithmetic Drills Mental math (Math 1)+ Java Applet Tool [2] Mental arithmetic drills in the four operations. Various difficulty levels are available. More: lessons, discussions, ratings, reviews,... Number Puzzle Mental math (Math 1)+ Flash Tool [0] Change the numbers in the blocks at the bottom of the pyramids and explore the effect on the number in the top block. What's the highest total you can get using the numbers 1 to 5 only once? More: lessons, discussions, ratings, reviews,... The Digit Work-Out Mental math (Math 1)+ Flash Tool [0] Practice your mental math with these addition, subtraction, and multiplication exercises in a range of difficulties. More: lessons, discussions, ratings, reviews,... Two Less Than - PDA version Mental math (Math 1)+ Calculator Tool [2] Select the number that is "two less than" the highlighted number. More: lessons, discussions, ratings, reviews,... Mental Arithmetic: Fractions Mental math (Math 3)+ Computer Tool \$ [2] Alterable worksheet of mental math fraction problems. Fee required to print; see this page. More: lessons, discussions, ratings, reviews,... Money Mental math (Math 3)+ Flash Tool [0] This module is about calculating with amounts of money, and includes factsheets, worksheets, a quiz at three levels of difficulty, and eight different games with which to practice mental addition and ... More: lessons, discussions, ratings, reviews,... The 4 Digit Sequencer Mental math (Math 3)+ Flash Tool [0] Given a starting number and step size, this sequencer challenges students to deduce the terms of a sequence by viewing subsets of the pattern. The sequencer allows for the input of four-digit and nega... More: lessons, discussions, ratings, reviews,... XPMath: Coins Mystery Mental math (Math 3)+ Flash Tool [0] There are two bags of coins. You know the type and number of coins in one bag. You also know the total dollar amount in both bags. Can you find the number of coins in the mystery bag? More: lessons, discussions, ratings, reviews,... MentalMath e-Xcitement Mental math (Math 4)+ JavaScript Tool [1] Mental math practice and competition. Covers addition, subtraction, multiplication, division, comparison, and "gap filling" (basic algebra). For registered users (registration free), results are dis... More: lessons, discussions, ratings, reviews,... The Crazy Counting Machine Mental math (Math 4)+ Flash Tool [0] Can you reach the target number in as few clicks as possible? Makes use of doubling and halving strategies in working towards a target number. More: lessons, discussions, ratings, reviews,... XP Math: Solving Two-Step Equa... Mental math (Math 7)+ Flash Tool [1] In this game, students race the clock to solve simple two-step equations. More: lessons, discussions, ratings, reviews,... Euclid's Elements, Book I, Pro... Midpoint formula (Geometry) Java Applet Tool [0] Euclid's proposition demonstrates how to bisect a finite straight line. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is over the diagram... More: lessons, discussions, ratings, reviews,... Mid-Point Theorem Midpoint formula (Geometry)+ Java Applet Tool [1] Students investigate what is so special about the midpoints of a triangle. They discover the midpoint theorem and can answer an exploration question. More: lessons, discussions, ratings, reviews,... Midpoint of a Line Segment Midpoint formula (Geometry) Flash Tool [0] A Flash introduction to determining the midpoint of a line segment given the coordinates of its endpoints. College Cram charges access fees by the month or by the semester for most resources. To g... More: lessons, discussions, ratings, reviews,... Midpoint of a line segment - ... Midpoint formula (Geometry) Flash Tool [0] An interactive applet and associated web page that demonstrate how to find the midpoint of a line segment when the coordinates of the endpoints are given. The applet has two points on a Cartes... More: lessons, discussions, ratings, reviews,... What Is Meant By A Midpoint? Midpoint formula (Geometry) Java Applet Tool [1] This applet shows you what a midpoint is. More: lessons, discussions, ratings, reviews,... DPGraph Viewer Modeling and applications (Geometry) Computer Tool [0] DPGraph Viewer allows you to view and manipulate 2D through 8D graphs created by the full version of DPGraph. DPGraph Viewer comes with hundreds of examples contributed by users from around the world. 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