An interactive applet and associated web page that demonstrate the properties of a 45-45-90 isosceles right triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 45 degrees, 45 degrees and 90 degrees The text on the page points out that the sides of a 45-45-90 triangle are always in the ratio of 1 : 2 : root 2 Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

These are recordings for grades 4-5 for listening comprehension. They were developed by ELPA and correlate with the ELP standards. 

Coders use a variety of blocks and sprites to create a story about a wizard who either helps people or plays pranks on them. The purpose of this project is to reinforce understanding of message blocks to give the appearance of switching costumes.

This two-part lesson on 'The Amazing Adaptations of Earth’s Organisms' that aligns with Texas Essential Knowledge & Skills Standards for 4-5th Grade Science and Art. It includes a first lesson where students read a scientific article from Frontiers for Young Minds, then work in expert teams to summarize the article using the jigsaw strategy. Then, in a second lesson, students learn about earth's biomes and a broader range of adaptations of organisms to various environmental challenges, then draw and describe their own organism with "superpower adaptations".

Now it's time for a really meaty problem! How can we count the number of possible casts when given a large set of robots to choose from?

We need to be careful with the order of scaling and translation. But why?

The 4 Connections is a research-based equity producing framework that focuses on building intentional relationships between students and faculty in ways that increase the number of student completions, reduce equity gaps, and ensure the quality of student learning.
The 4 Connections identifies foundational principles faculty with high completion rates use to dramatically improve the quality of students' experiences in and outside the classroom.

Great lead up game for soccer. It is a way for students to practice the skills they have learned, and practiced. Easier way to assess students, because of smaller numbers on the move.

Tree diagrams allow us to visualize these counting problems using any number of parts.

This is an extension activity after discussing cancer or lead into discussing about student choices. Essential QuestionsStudents will be able to to describe behaviors lead to skin cancer and how can it be prevented.Students will be able to explain the risk and reward behaviors.  

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Which of the polygons are right triangles? Choose a measuring tool to help you determine this. These are right trianglesThese are not right triangles F...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Look at each figure. Read each of the descriptions. Place an X in the box if it appears to describe the figure pictured. A. B. C. D. 4 vertices Four si...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Each shape below has a line of symmetry. Draw a line of symmetry for each shape. Not every shape has an line of symmetry. Which of the four shapes belo...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Letters can be thought of as geometric figures. How many line segments are needed to make the letter A? How many angles are there? Are they acute, obtu...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Say what a trapezoid is in your own words. Compare your definition with a partner. Is this parallelogram a trapezoid according to your definition? Expl...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Draw at least two examples and two non-examples of each of the quadrilaterals defined below. Parallelogram: A quadrilateral with 2 pairs of parallel si...