very usefull to understand liquid

- Material Type:
- Lesson
- Date Added:
- 02/01/2016

- English
- العربيّة

Unrestricted Use

Public Domain
very usefull to understand liquid

- Material Type:
- Lesson
- Date Added:
- 02/01/2016

Conditional Remix & Share Permitted

CC BY-NC-SA
Students will explore multi-digit numbers and the relationship between ones, tens and hundreds; a digit in one place is 10x the digit in the place to its right. Students will use their bodies to represent digits in multi-digit numbers up to the hundredths place and compare these numbers using <, =, >. Students will use their bodies as multi-digit numbers to add and subtract.

- Material Type:
- Activity/Lab
- Teaching/Learning Strategy
- Author:
- Admin
- Date Added:
- 01/28/2016

Only Sharing Permitted

CC BY-NC-ND
This lesson unit is intended to help teachers assess how well students are able to visualize two-dimensional cross-sections of representations of three-dimensional objects. In particular, the lesson will help you identify and help students who have difficulties recognizing and drawing two-dimensional cross-sections at different points along a plane of a representation of a three-dimensional object.

- Material Type:
- Assessment
- Lesson Plan
- Provider:
- Shell Center for Mathematical Education
- Provider Set:
- Mathematics Assessment Project (MAP)
- Date Added:
- 04/26/2013

Conditional Remix & Share Permitted

CC BY-NC-SA
This Demonstration illustrates the concept of rotating a 2D polygon. The rotation matrix is displayed for the current angle. The default polygon is a square that you can modify.

- Material Type:
- Activity/Lab
- Diagram/Illustration
- Homework/Assignment
- Interactive
- Simulation
- Teaching/Learning Strategy
- Provider:
- Wolfram Research
- Provider Set:
- Wolfram Demonstrations Project
- Author:
- Mito Are and Valeria Antohe
- Date Added:
- 09/04/2013

This page contains links to thirty-six stories children's stories written in Arabic. Many of the stories include morals or other teaching moments. Each page of every story has small illustrations for difficult words at the bottom to help make reading easier for both native and non-native speakers. The stories move from easy to more difficult. The stories are fully voweled.

- Material Type:
- Reading
- Provider:
- Dar al-Manhar
- Date Added:
- 10/14/2013

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Educational Use
This is a collection of one page stories brought together in one document available for free download. Each page/story corresponds with a day of the week, although the stories themselves have no connection with one another. The stories include moral lessons. Each story is fully voweled.

- نوع المادة:
- القراءة
- Provider:
- bookstolearnarabic
- Date Added:
- 10/14/2013

Read the Fine Print

An interactive applet and associated web page that shows how triangles that have two angles and a non-included side the same must be congruent. The applet shows two triangles, one of which can be reshaped by dragging any vertex. The other changes to remain congruent to it and the two angles and non-included side are outlined in bold to show they are the same measure and are the elements being used to prove congruence. The web page describes all this and has links to other related pages. 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.

- Material Type:
- Reading
- Simulation
- Provider:
- Math Open Reference
- Author:
- John Page
- Date Added:
- 02/16/2011

Unrestricted Use

CC BY
This task examines the ways in which the plane can be covered by regular polygons in a very strict arrangement called a regular tessellation. These tessellations are studied here using algebra, which enters the picture via the formula for the measure of the interior angles of a regular polygon (which should therefore be introduced or reviewed before beginning the task). The goal of the task is to use algebra in order to understand which tessellations of the plane with regular polygons are possible.

- Material Type:
- Activity/Lab
- Provider:
- Illustrative Mathematics
- Provider Set:
- Illustrative Mathematics
- Author:
- Illustrative Mathematics
- Date Added:
- 01/21/2013

Read the Fine Print

Educational Use
Unrestricted Use

CC BY
The purpose of this task is to study some patterns in a small addition table. Each pattern identified persists for a larger table and if more time is available for this activity students should be encouraged to explore these patterns in larger tables.

- Material Type:
- Activity/Lab
- Provider:
- Illustrative Mathematics
- Provider Set:
- Illustrative Mathematics
- Author:
- Illustrative Mathematics
- Date Added:
- 08/15/2012

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Learn addition and subtraction.

- Material Type:
- Diagram/Illustration
- Interactive
- Reading
- Provider:
- Goodwill Community Foundation, Inc.
- Provider Set:
- GCFLearnFree
- Date Added:
- 07/19/2013

Read the Fine Print

Educational Use
Read the Fine Print

This lesson is about trying to get students to make connections between ideas about equations, inequalities, and expressions. The lesson is designed to give students opportunities to use mathematical vocabulary for a purpose to describe, discuss, and work with these symbol strings.The idea is for students to start gathering global information by looking at the whole number string rather than thinking only about individual procedures or steps. Hopefully students will begin to see the symbol strings as mathematical objects with their own unique set of attributes. (7th Grade Math)

- Material Type:
- Activity/Lab
- Lecture
- Lesson Plan
- Teaching/Learning Strategy
- Provider:
- Noyce Foundation
- Provider Set:
- Inside Mathematics
- Author:
- Disston, Jacob
- Date Added:
- 11/30/2011

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Join Simon, Anita, Emily and the rest of Ms. Patel's class as they gain an understanding of how the Earth works as a system while preparing their end of the school year play.

- Material Type:
- Reading
- Provider:
- The GLOBE Program
- Provider Set:
- Globe Program
- Date Added:
- 06/19/2013

Unrestricted Use

CC BY
Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life.

- Material Type:
- Simulation
- Provider:
- University of Colorado Boulder
- Provider Set:
- PhET Interactive Simulations
- Author:
- Carl Wieman
- Danielle Harlow
- John Blanco
- Kathy Perkins
- Noah Podolefsky
- Ron LeMaster
- Sam McKagan
- Wendy Adams
- Date Added:
- 09/02/2012

Only Sharing Permitted

CC BY-NC-ND
This lesson unit is intended to help teachers assess how well students are able to: work with concepts of congruency and similarity, including identifying corresponding sides and corresponding angles within and between triangles; Identify and understand the significance of a counter-example; Prove, and evaluate proofs in a geometric context.

- Material Type:
- Assessment
- Lesson Plan
- Provider:
- Shell Center for Mathematical Education
- Provider Set:
- Mathematics Assessment Project (MAP)
- Date Added:
- 04/26/2013

Conditional Remix & Share Permitted

CC BY-NC-SA
In this activity, learners use a hand-made protractor to measure angles they find in playground equipment. Learners will observe that angle measurements do not change with distance, because they are distance invariant, or constant. Note: The "Pocket Protractor" activity should be done ahead as a separate activity (see related resource), but a standard protractor can be used as a substitute.

- Material Type:
- Activity/Lab
- Provider:
- Exploratorium
- Author:
- Exploratorium
- Gordon and Betty Moore Foundation
- National Science Foundation
- The Exploratorium
- Date Added:
- 12/07/2010

Unrestricted Use

CC BY
In this task students have to interpret expressions involving two variables in the context of a real world situation. All given expressions can be interpreted as quantities that one might study when looking at two animal populations.

- Material Type:
- Activity/Lab
- Provider:
- Illustrative Mathematics
- Provider Set:
- Illustrative Mathematics
- Author:
- Illustrative Mathematics
- Date Added:
- 05/01/2012

Unrestricted Use

CC BY
In this problem students are comparing a very small quantity with a very large quantity using the metric system. The metric system is especially convenient when comparing measurements using scientific notations since different units within the system are related by powers of ten.

- Material Type:
- Activity/Lab
- Provider:
- Illustrative Mathematics
- Provider Set:
- Illustrative Mathematics
- Author:
- Illustrative Mathematics
- Date Added:
- 05/01/2012

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Educational Use
In this interactive game adapted from the Bigelow Laboratory for Ocean Sciences, build a food web that illustrates the flow of energy in an Antarctic ecosystem and the relationships between predators and prey.

- Material Type:
- Activity/Lab
- Interactive
- Provider:
- PBS LearningMedia
- Provider Set:
- PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
- Author:
- National Science Foundation
- WGBH Educational Foundation
- Date Added:
- 08/09/2007