Blog Post #9: Math Applet Review

1.       State Data Map (6-8 grade)

·         http://illuminations.nctm.org/Activity.aspx?id=3580

·         Data Analysis and Probability

·         In this applet, students are provided with a visual representation of the 50 states of our country. They can manipulate the map so that it shows various comparisons of the states including land area, population, representatives in Congress, etc. Students can also change the colors of the states to better see the contrasts between them or they can enter their own data into the map. The map will calculate the mean and the median of the data shown as well.

·         This applet would be a useful tool in the classroom for both the mathematics classroom and the social studies classroom. Math teachers can use this tool when teaching about data analysis and probability. Students can be asked to compare states of their choice given the provided data or answer teacher generated questions using the data. Additionally, this tool might be helpful in reviewing the concepts of median and mode for students.

2.       Bar Grapher (3-5 grade)

·         http://illuminations.nctm.org/Activity.aspx?id=4091

·         Data analysis and probability

·         This applet enables students to create their own bar graphs. Students can select from pre-made data sets or input their own data into the applet. The axes of the graph can be manipulated using a scrollbar on the applet as can the scale of the graph. Additionally, students have the option of changing the colors of the graph to make it more visually appealing.

·         This tool might be useful in an elementary classroom with students who are struggling with or just learning how to create bar graphs. They can input their data into the applet to check their own work or to gain a better understanding of why the graph is set up as it is. Students can include their graphs in classroom presentations to share with the rest of the class. These computer generated graphs are much more simpler to create than they would be to create in a program such as Microsoft Excel and it would provide the rest of the class with a graph that is much more easier to read than a graph created by hand. Additionally, the computer generated graphs are much easier to manipulate or change than would a graph created by hand in case of any mistakes made.

3.       Okta’s Rescue (K-2 grade)

·         http://illuminations.nctm.org/Activity.aspx?id=3528

·         Number and Operations

·         This app is for early elementary students to practice their counting skills. The object of the game is for students to count the correct number of octopi when they are provided with a specific whole number. It consists of three levels. The first level asks students to count up to 6 octopi; the second level goes through 12, and the third up to 18. There is also the option for teachers to customize the numbers as well. Once the time period has expired, students are asked to count how many octopi they saved using a number line.

·         This app is an engaging and entertaining way to help young students practice their counting skills. It can provide differentiation for an entire class of students with the three levels and the customized level options. Therefore, students at higher levels will not be bored easily and students at lower levels can work their way through the levels at their own pace. Students will enjoy working against the clock as well as the colorful graphics and sounds that the app provides to them.