Ohio Resource Center

 Content Resources with Applets for Grades 3-4 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.

 Change Maker (ORC#: 2517) STANDARDS ALIGNMENT: Grades 1–5. This applet gives students practice in figuring the correct change when making a purchase with bills of different denominations. Students may solve problems at four levels of difficulty using currencies from five different countries. (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)

 Visual Fractions (ORC#: 58) Reduce fraction anxiety, called Fractionitis, in adults and students by interacting with fractions using the applets at this site. See Main Categories on the left side of the home page for interactive fraction and mixed number problems. Also included are short games where the user guesses fractional parts of a hedge while trying to find the location of Grampy's and then Granny's various hiding places. (Author/pk/js)

 Power Cards: A Mathematical Puzzle (ORC#: 639) STANDARDS ALIGNMENT: Grades 3-7. Power cards are a device for guessing secret numbers. The 5-card set described at this site can be used for numbers up to 31 and is especially useful for guessing birthdays. Young students will have fun figuring out the "trick," while middle grades students can reinforce their understanding of place value by learning the binary numeration system, the basis of the power cards. Both an applet and a print version of the activity are included. (sw/js)

 Learning about Number Relationships and Properties of Numbers Using Calculators and Hundred Boards: Displaying Number Patterns (ORC#: 1438) STANDARDS ALIGNMENT: Grades 2-4. In this first of two activities, virtual hundred boards and calculators present a visual way to examine patterns and relationships among numbers. Skip counting patterns are displayed on a calculator and on a hundred board simultaneously. (author/sw/js)

 Displaying Number Patterns (ORC#: 1439) STANDARDS ALIGNMENT: Grades 2-4. In this second of two activities, students use virtual hundreds boards and calculators to skip count both forward and backward starting at various numbers. (author/sw/js)

 Creating, Describing, and Analyzing Patterns to Recognize Relationships and Make Predictions: Making Patterns (ORC#: 4392) STANDARDS ALIGNMENT: Grades 1-5. This three-part resource highlights aspects of how students' understanding of patterns develops as they analyze repeating and growing patterns and make predictions. The first part contains an applet for creating, comparing, and predicting multiple repetitions of colored squares. The remaining parts feature discussion and illustrations to help teachers create meaningful pattern learning experiences about for students. (author/sw/js)

 Pattern Block Fractions (ORC#: 35) STANDARDS ALIGNMENT: Grades 3-6. This website includes four different pattern block activities that focus on identifying fractional values in the context of arbitrarily defined unit wholes. The pattern block applet activities cause students to think about unconventional unit wholes. Students work with triangles, parallelograms, trapezoids, hexagons, and other geometric shapes to identify fractional parts of combined shapes. (sk/sw/js)

 Communicating about Mathematics Using Games: Playing Fraction Tracks (ORC#: 1441) STANDARDS ALIGNMENT: Grades 3-7. When playing the online Fraction Track game, students must think about how fractions are related to a unit whole, compare fractional parts of a whole, and find equivalent fractions. This resource includes pedagogical information for the teacher. (author/sw/js)

 Understanding Distance, Speed, and Time Relationships Using Simulation Software (ORC#: 1444) STANDARDS ALIGNMENT: Grades 3-7. This site features a software simulation of two runners racing on a track. Students can control the speeds and starting points of the runners, watch the race, and examine a graph of the time-versus-distance relationship. Activities like this can help students in the upper elementary grades understand ideas related to functions. (author/sw/js)

 Exploring Properties of Rectangles and Parallelograms Using Dynamic Software (ORC#: 4402) STANDARDS ALIGNMENT: Grades 3-5. This applet allows students to change the size and orientation of a rectangle and a parallelogram, while preserving the essential characteristics of each shape. For example, they can easily determine that one kind of parallelogram is a rectangle, but that a rectangle cannot be converted into a parallelogram with nonright angles. (sw/js)

 Taxicab Treasure Hunt (ORC#: 15) STANDARDS ALIGNMENT: Grades 3-12. This activity, with an applet, can be a simple game that gives students practice with coordinates, but it is also an introduction to taxicab geometry, a gateway to non-Euclidean geometry. The taxicab game is simple enough to play by trial and error, but the underlying mathematical ideas are intriguing enough to challenge high school students. (author/sw/js)

 Graphing and the Coordinate Plane (ORC#: 5078) STANDARDS ALIGNMENT: Grades 4-6. Two applets provide practice in plotting points in all four quadrants of the Cartesian plane. With the first applet, students plot individual points, and the second challenges students to move one point to another location based on specific constraints. (sw/js)

 Collecting, Representing, and Interpreting Data Using Spreadsheets and Graphing Software: Collecting and Examining Weather Data (ORC#: 1442) STANDARDS ALIGNMENT: Grades 3-7. In the first of two activities, students collect, organize, and then examine weather data that have been compiled over a period of time in a spreadsheet applet. In the second activity (acailable from this link), students use the graphing functions of a spreadsheet to help them interpret the data. (author/sw/js)

 Fractals (ORC#: 642) STANDARDS ALIGNMENT: Grades 3–10. This introductory fractals unit, accessible to elementary and middle school students, describes what fractals are, why to study fractals, how to make fractals, and properties of fractals. The site includes applets, activities, discussion questions, and numerous links to other fractal websites. (sw/js)

 Introduction to the Concept of Probability (ORC#: 5086) STANDARDS ALIGNMENT: Grades 4-8. This resource focuses on three main ideas, the basic definition of probability, the difference between theoretical and experimental probability, and set operations illustrated by simple Venn diagrams. Students can use an applet, the Crazy Choices Game, to play games of chance to explore and reinforce probability concepts. (sw/js)