Ohio Resource Center

 Content Resources with Applets for preK-grade 2 Each content resource contains one or more applets that a teacher may use as part of a lesson. The resources are organized by their alignment to the academic content standards: number, geometry and measurement, algebra, and data analysis and probability.

 Let's Count! (ORC#: 570) STANDARDS ALIGNMENT: Grades preK-1. Here are applets to engage students in counting, extending sequences, constructing sets that contain 0-3 elements more or less than a given set, and adding by combining sets. (sw/js)

 Balancing Act (ORC#: 2413) STANDARDS ALIGNMENT: Grades 1-4. Students explore the concept of equivalence using a virtual representation of a physical pan balance. The applet uses weighted geometric shapes as "variables" and challenges students to see what combinations of variables are equivalent. Major properties of equivalence relations are also illustrated but not explicitly discussed. (author/sw/js)

 How Many More Fish?: Looking Back and Moving Forward (ORC#: 3995) STANDARDS ALIGNMENT: Grades K-2. This resource describes five different activities for practicing subtraction combinations using the comparison model for subtraction. The activities are arranged at stations. Students use an online spinner at station 3. (sw/js)

 Description and Lesson Plan for the Base 10 Blocks Program (ORC#: 3618) STANDARDS ALIGNMENT: Grades 1-2. This website provides an applet and complete instructions for using base ten blocks to teach the four operations of arithmetic from a place value perspective. The advantage of using the applet over real base ten blocks is that the applet blocks can be glued into larger units to illustrate addition and broken into their component units to illustrate subtraction. (sw/js)

 Get the Turtle to the Pond (ORC#: 1433) STANDARDS ALIGNMENT: Grades preK-2. Students engage in creative problem solving while estimating length and angle measure need to get using the Turtle Pond Applet. Students first observe two preprogrammed paths and then write their own solutions. The turtle moves and leaves a trail or path according to the instructions given. Students may extend the path, if necessary, or clear it and start over. (author/sw/js)

 Investigating the Concept of Triangle and the Properties of Polygons: Making Triangles (ORC#: 1434) STANDARDS ALIGNMENT: Grades preK-2. In two related activities accessible from this site, students use a geoboard applet to create and identify triangles, describe their properties, and thereby help develop spatial sense. In the first activity, students familiarize themselves with the applet by focusing on triangles. In the second activity, students make and compare a variety of polygons, describing the salient properties of the shapes they create. (author/sw/js)

 Who Wants Pizza?: A Fun Way to Learn About Fractions (ORC#: 637) STANDARDS ALIGNMENT: Grades 1-7. This site comprises six activities including defining a fraction, finding equivalent fractions, adding fractions, and multiplying fractions. Students may respond online to get immediate feedback, or they can work the examples on grid paper. (sw/js)