Developing+Fraction+concepts

= Online Resources =

PBS Kids- Make a Match: (@http://pbskids.org/cyberchase/games/equivalentfractions/index.html), in which students examine the concept of equivalent fractions and match a fraction with a graphic representation of that fraction.

Another activity is “Thirteen Ways of Looking at a Half” (@http://pbskids.org/cyberchase/games/fractions/index.html), in which students explore fractions of geometric shapes—in particular, the thirteen ways half of an eight-piece square can be arranged.

**Fraction Bars (Math Playground)** The user sets the total parts and then the shaded parts for each bar. Explore fractional parts, the concept of numerator and denominator, and equivalency. The user can turn the numbers on or off. **Fraction Bars (NLVM)** A very versatile model that is similar to the use of Cuisenaire rods except that bars are segmented. Students can create bars of any size from 1 to 10 in any color and place them anywhere on the screen. Multiple bars are easily made. There are no numbers or evaluation of what is being done. **Fraction Concepts (eNLVM)** These part-whole activities provide practice in writing and comparing fractions. A full lesson plan with NCTM standards correlations and worksheets is provided, and the teacher can log in to see how students performed. **Fractions – Comparing (NLVM)** Students use models to find common denominators in order to compare two fractions and then locate both fractions on the number line and a new fraction between the first two. **Fractions – Equivalent (NLVM)** A tool for exploring equivalent fractions. Proper fractions are presented randomly in either square or circular formats. Students can slice the model in as many parts as they wish to see which slicings create equivalent fractions. Students enter an equivalent fraction and then click a button to check their response. **Fractions – Visualizing (NLVM)** Users are given a fraction and a model that can be subdivided into as many sections as desired. By clicking on sections the fraction model is shaded to match the given fraction. Two even simpler versions are also available. **Fraction Pointer (Shodor)** A good applet for connecting an area model with the number line. After creating area models for two fractions, the user must then create a new fraction between the first two. Similar to the //Illuminations// applet, “Equivalent Fractions.” **Fraction Track (NCTM)** Players position fractions on number lines with different denominators. Fractions can be split into parts. A challenging game involving equivalent-fraction concepts. Students explore relationships among fractions through work with the set, region, and length models. These lessons help students make sense of basic fraction concepts, comparing and ordering fractions, and working with equivalency. **Developing the Set Model** **Developing the Region Model** **Developing the Length Model** **Math Forum** Part of the Math Forum web page that provides lessons and activities as well as answers about fractions and decimals. **National Library of Virtual Manipulatives (NLVM)** This site offers numerous models for exploring fractions, including fraction bars and fraction pieces. Also there is an applet for comparing and visualizing fractions. **Teaching, Learning and Communicating About Fractions (NCTM)** As part of the NCTM's Illuminations site, this 4-part website provides and introduction and video-based activities on fractions. This particular activity is geared for grades 3-5, and promotes conceptual thinking regarding fractions.
 * Fun with Fractions Lessons (NCTM)**

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