# ALEX Classroom Resources

ALEX Classroom Resources
Subject: Mathematics (9 - 12)
Title: Central Tendency | Targeted Math Instruction
URL: https://aptv.pbslearningmedia.org/resource/ket-targetedmath4/central-tendency/
Description:

One way we analyze data is to look at measures of central tendency—mean, median, and mode. They are the tools to look at the information for the purpose of answering the question, “What is normal?” Understanding the measures of central tendency can help us make important life decisions. For example, averages can help us set goals or plan budgets. At the end of this lesson about central tendency, students will be able to recognize and apply the concepts of mean, median, and mode in real-life problems.

Subject: Mathematics (9 - 12)
Title: What Is Statistics? | Against All Odds: Unit 1
URL: https://aptv.pbslearningmedia.org/resource/b6826faf-b2a6-448e-ac82-2929f304ae6f/what-is-statistics-against-all-odds-unit-1/
Description:

Introduce high school students to the art and science of statistics in the 6-minute video, "What is Statistics?" from the Against All Odds series. This video resource will demonstrate how gathering, organizing, drawing, and analyzing data is applicable in everyday life and a variety of careers.

Subject: Mathematics (9 - 12)
Title: Measures of Center | Against All Odds: Unit 4
Description:

Discover how calculating median and mean reveal different ways to describe a center of distribution in this 9-minute video from the Against All Odds statistics series. This video resource will examine differences in comparable wages for men and women to see practical applications of statistics and data visualization.

Subject: Mathematics (9 - 12)
Title: Statistics: Using Sampling to Count Trees
URL: https://aptv.pbslearningmedia.org/resource/statistics-sampling-count-trees/statistics-using-sampling-to-count-trees/
Description:

This exercise was developed to complement the film The National Parks of Texas by Texas PBS & Villita Media. In this activity, students will learn about estimating the number of trees in a large area based on a smaller area.

This is one way statisticians measure forests and other wide expanses of land. It's also a great way to illustrate how polling works. Scientists will interview a smaller sample size of Americans, rather than every single American, and then make estimations based on their results. In the same way, we counted smaller samples of trees, rather than all of the trees individually to get an estimate of how many trees are in the park total.

Note: The corresponding lesson plan can be found under the "Support Materials for Teachers" link on the right side of the page.

Subject: Mathematics (9 - 12)
Title: Understanding a Crowd’s Predictive Ability | Prediction by the Numbers
URL: https://aptv.pbslearningmedia.org/resource/nvpn-sci-crowds/understanding-a-crowds-predictive-ability-prediction-by-the-numbers/
Description:

Examine a mathematical theory known as the “wisdom of crowds,” which holds that a crowd’s predictive ability is greater than that of an individual, in this video from NOVA: Prediction by the Numbers. Sir Francis Galton documented this phenomenon after witnessing a weight-guessing contest more than a hundred years ago at a fair. Statistician Talithia Williams tests Galton’s theory with modern-day fairgoers, asking them to guess the number of jelly beans in a jar. Use this resource to stimulate thinking and questions about the use of statistics in everyday life and to make evidence-based claims about predictive ability.

Subject: Mathematics (9 - 12)
Title: Histograms | Against All Odds: Unit 3
URL: https://aptv.pbslearningmedia.org/resource/5e9c3b66-9d17-400c-a605-a6c9c8a5e9e2/histograms-against-all-odds-unit-3/
Description:

Real-world examples demonstrate the benefits of histograms in this 10-minute video from the Against All Odds statistics series. Data visualization techniques help students understand the practical application of statistics in meteorology and in predicting traffic patterns. Hosted by Pardis Sabeti, this series walks students through understanding how statistics are used in everyday life.

ALEX Classroom Resources: 6