
Determining the Perimeter of a Polygon (Series and Activity 1)
 Resource ID: TEKS12_MATH_03_001
 Grade Range: 3
 Subject: Math
This activity provides an opportunity for students to investigate the perimeter of polygons.

Parallel and Intersecting Lines
 Resource ID: TEKS12_MATH_04_001
 Grade Range: 4
 Subject: Math
This activity provides an opportunity for students to build an understanding of parallel and intersecting lines.

Modeling the Volume of a Rectangular Prism
 Resource ID: TEKS12_MATH_05_001
 Grade Range: 5
 Subject: Math
This activity provides an opportunity for students to model the volume of a rectangular prism and make connections to the formula, V=l ´ w ´ h.

Exploring the Ratio of Circumference to Diameter
 Resource ID: TEKS12_MATH_07_003
 Grade Range: 7
 Subject: Math
This activity provides an opportunity for students to explore the ratio of the circumference of its circle to the length of its diameter in order to generalize the ratio for pi.

Area of Triangles, Parallelograms, and Trapezoids
 Resource ID: TEKS12_MATH_06_002
 Grade Range: 6
 Subject: Math
These activities provide an opportunity for students to explore the area formulas for triangles, trapezoids, and parallelograms.

Reflections
 Resource ID: TEKS12_MATH_07_001
 Grade Range: 8
 Subject: Math
These activities provide an opportunity for students to explore reflections both on and off of a coordinate plane.

Translations
 Resource ID: TEKS12_MATH_07_002
 Grade Range: 8
 Subject: Math
These activities provide an opportunity for students to explore translations both on and off of a coordinate plane.

Dilations
 Resource ID: TEKS12_MATH_08_001
 Grade Range: 8
 Subject: Math
These activities provide an opportunity for students to explore dilations both on and off of a coordinate plane.

Interactive Math Glossary
 Resource ID: MATH_IMG_001
 Grade Range: K–8
 Subject: Math
The Interactive Math Glossary is provided by the Texas Education Agency to help teachers explore and understand mathematics vocabulary.

8.01 Introduction to Confidence Intervals
 Resource ID: SE131001
 Grade Range: 9–12
 Subject: Math
In this video, students will be introduced to the construction and interpretation of confidence intervals.

8.02 Confidence Interval for One Mean
 Resource ID: SE131002
 Grade Range: 9–12
 Subject: Math
In this video, students will learn to construct a confidence interval for a population mean.

8.03 Visualizing a Confidence Interval
 Resource ID: SE131003
 Grade Range: 9–12
 Subject: Math
In this video, students will learn to visualize the construction of a confidence interval.

8.04 Interpreting Confidence Intervals
 Resource ID: SE131004
 Grade Range: 9–12
 Subject: Math
In this video, students will learn to interpret a confidence interval.

8.05 Confidence Interval for One Proportion
 Resource ID: SE131005
 Grade Range: 9–12
 Subject: Math
In this video, students will learn to construct and interpret a confidence interval for one proportion.

8.06 Factors Affecting the Width of a Confidence Interval
 Resource ID: SE131006
 Grade Range: 9–12
 Subject: Math
In this video, students will explore how the components of a confidence interval affect its width.

8.07 Confidence Intervals in the Real World
 Resource ID: SE131007
 Grade Range: 9–12
 Subject: Math
In this video, students will analyze confidence intervals in the real world.

7.01 Variability in Sample Proportions, Part 1
 Resource ID: SE131036
 Grade Range: 9–12
 Subject: Math
In this video, students describe and model variability using a binary population distribution and the sampling distribution of a sample proportion.

7.02 Variability in Sample Proportions, Part 2
 Resource ID: SE131037
 Grade Range: 9–12
 Subject: Math
In this video, students learn to describe and model variability using a binary population distribution, and the sampling distribution of a sample proportion.

7.03 Variability in Sample Means
 Resource ID: SE131038
 Grade Range: 9–12
 Subject: Math
In this video, students describe and model variability using a continuous population distribution, and the sampling distribution of a sample mean.

7.04 Using the Central Limit Theorem
 Resource ID: SE131039
 Grade Range: 9–12
 Subject: Math
In this video, students use the central limit theorem to describe variability using a sample mean.