## * * Mathematics **

A wealth of mathematics materials is available on the Internet accessible from many educational databases. To appreciate the variety, look at these excellent examples. As you do, critique the lessons in the following areas.

• accuracy
• creative activities
• attractiveness
• graphics
• print-outs
• use of the Web
• links to related sites
• teacher instructions
• assessment of student learning

The best lessons will have all of these attributes!

LESSONS

• A Functional Housing Market
Students will access the Internet to search for housing prices in Houston, Texas, (the location can be changed to accommodate any location) and compare the prices to the number of square feet found in the living area of a house. A linear equation will be derived from this data on a coordinate plane using the "best-fit" method. Using information from the graph of the data and the equations of the function, students will answer questions about housing prices.
• Cooking Up Fractions Reinforce students' skills in multiplying and dividing fractions by increasing and decreasing the serving size in a recipe. Students will also practice using search engines. Searching for recipes on their own to increase and decrease the recipe size. (Make sure fractions are in the recipes they choose).
• The Internet Pizza Server
Students will create their own pizza using choices of toppings. They will be able to "order" their creation from the Internet and see a digitalized version of their pizza. They will use their order to calculate the area of various size pizzas, determine the "better buy", & cost per topping. Students will also have to use research skills to answer questions pertaining to the Internet Pizza Server Home Page.
• Learn Fractions with Cuisenaire Rods
What are Cuisenaire Rods? Cuisenare Rods are a collection of rectangular rods, each of a different color and size. The smallest rod is one centimeter long and the longest rod is 10 centimeters long.
• No Matter What Shape Your Fractions are In
These activities are designed to cause students to think; they are not algorithmic. Students will explore geometric models of fractions and discover relations among them. Appropriate Grades: 3rd - 6th, maybe. But precocious kindergarteners could do some of it, and middle schoolers needing another look at fractions could appreciate it as well. "Drawing Fun Fractions" would be good for most middle school students.
• A Fractal Lesson
Students make a Sierpinski Triangle and a Koch Snowflake and explore fractal resources on the Internet in this lesson for elementary and middle school students.
• Three Door Puzzle
A great site! The problem is meticulously posed, the graphics are excellent and it is fun to "play". The is a full explaination of the solution and nice generalization of the problem for n doors.
• Algebra I Lessons
These pages were developed through GirlTECH '95, a teacher training and student technology council program sponsored by the Center for Research on Parallel Computation (CRPC), a National Science Foundation Science and Technology Center.
• Playing the Market
This lesson uses the Internet to research a company in the stock market. Students find a description of a company and its products and a report of its earnings during the past year. They track stock data and analyze and graph it using Mathematica.
• Chaos in the Classroom.
Robert Devaney, a professor at Boston University creates a lesson on fractals and chaos.