Third graders look for break apart irregular polygons to make arrays to find the area of these common shapes.

Math practice exercise on using arrays and repeated addition to visualize multiplication.

In this lesson on the identity property of multiplication, students explore arrays, learn key vocabulary, and write equations.

In this lesson on multiplication, students will understand and model arrays to help them multiply and count efficiently in everyday situations. They will also practice multiplication facts.

In this lesson, 3rd graders will use arrays, repeated addition, skip counting, and equal groups to solve multiplication word problems. The lesson has a Valentine's Day theme.

In this instructional activity on the commutative property of multiplication, students explore arrays, learn key vocabulary, and write equations.

The resource consists of student notes, instructor notes, and an interactive activity. The activity allows learners to find the factors of a given number and then draw the product as the area of a rectangle on a grid.

[Free Registration/Login Required] In this flipchart, students apply their understanding of ordering decimals on a number line. Students use the visual and interactive features in Activstudio to arrange decimals in arrays.

[Free Registration/Login Required] This flipchart is an introduction to Multiplication using arrays and repeated addition. Interactive flipchart that can easily be used as a center - page notes contain all student instructions.

The USArray Ground Motion Visualization (GMV) is a video-based IRIS DMS product that illustrates how seismic waves travel away from an earthquake location by depicting the normalized recorded wave amplitudes at each seismometer location...

[Free Registration/Login Required] Included is a large array of maps showing poverty on a global scale as well as maps of individual countries. The maps show poverty measured in several different ways. PDF files may take awhile to download.

Valuable lessons in the history of Europeans' early exploration and settlement of America can be gained by following the money used in trade. Coins and Currency exhibition lets you examine evidence of Spanish, British, Dutch, French, and...

Prosperity and Thrift: The Coolidge Era and the Consumer Economy, 1921-1929 assembles a wide array of Library of Congress source materials from the 1920s that document the widespread prosperity of the Coolidge years, the nation's...

[Free Registration/Login Required] Comprehensive learning module for AP U.S. History on the imperial struggle over control of the American colonies, the emergence of a new republic, and the developing social, political and economic...

In the 1930s, the Communist Party and associated organizations attracted the support of a glittering array of novelists, screenwriters, critics, and artists. Within the Communist Party, these individuals had found comradeship,...

This site from Richland Community College provides lecture notes to a class on Algebra. It covers a wide array of topics including functions, quadratic equations, inequalities, and much more.

Digitization of Ruth Baldwin's 40-year collection of children's literature provides the user a glimpse into childhood memories. Literature primarily from the 19th and 20th century. Searching on a vast array of titles, such as Alice in...

This site from The History Place is a comprehensive site about the events leading up to the Vietnam War and ending with the withdrawal of American troops. Excellent slide show with an array of images from the era.

This site from the American Institute of Biological Sciences contains articles on a wide array of issues related to species diversity and extinction. Many articles available in Spanish.

Students will love to play around in this site! As soon as you click on Enter, the site takes control of your screen with an imposing array of tall building shadows. Some of the buildings have been built, some are under consideration....

The impact that the Second World War had on the prairie town on Saskatoon is investigated here. This investigation includes how Saskatoon was transformed from an agriculture centre to a town crucial to the mobilization of supplies and a...

An amazing array of historical photographs of British Columbia's industrial past can be found in this informative site.

A vast array of information about the South American country of Colombia. Features facts about its flag, coat of arms, the capital city of Bogota, music, Colombian currency, a map, and a list of facts. Click on the link to listen to the...

A comprehensive museum-mounted exhibition on Leonardo da Vinci looks at all his intellectual and creative pursuits: artistic, scientific, mathematic, and technological. Includes an array of stunning images and video presentations, along...