Students learn about linear programming (also called linear optimization) to solve engineering design problems. As they work through a word problem as a class, they learn about the ideas of constraints, feasibility and optimization related to graphing linear equalities. Then they apply this information to solve two practice engineering design problems related to optimizing materials and cost by graphing inequalities, determining coordinates and equations from their graphs, and solving their equations. It is suggested that students conduct the associated activity, Optimizing Pencils in a Tray, before this lesson, although either order is acceptable.

This lesson will help children relate the concepts of past, present and future to their own lives. This lesson will be 45 minutes and include discussions, book reading and coloring. The children will learn the vocabulary words: time, yesterday, today and tomorrow. They will be able to relate this to personal experiences in their own lives. Materials:CalendarWhite board, white board markersHoughton Mifflin Social Studies Teacher Edition Level K My WorldWorksheets for all 15 studentsPencils and crayonsBig Ideas / Essential Questions:What is the difference between last year, this year and next year?Can you describe some of these differences using examples from your own life? 

This is a lesson plan for elementary students around third grade. They will make a model of the moon, upload a video of it, and answer a quiz on it. 

Chiricahua Apache artist Allan Houser’s “Earth Song” is the signature sculpture on display at the Heard Museum in Phoenix, AZ. Created in 1979 from Alabama marble, it depicts an Apache man singing a song of respect, a prayer to Mother Earth. Houser is considered the Grandfather of Contemporary Native American Sculpture for creating works that are grounded in a respect for all indigenous cultures. Discover more reasons why “Earth Song” is a masterpiece with David Roche, Dickey Family Director and CEO of the Heard Museum. Video by Bank of America. Created by Smarthistory.

Allele frequencies in populations and how they differ from genotype frequencies. Created by Sal Khan.

A gene as a stretch of DNA on a chromosome. Alleles as versions (sequence variants) of a gene.

In this inquiry activity students work in groups to investigate allelopathy via research, using the scientific method to plan and carry out an experiment, and creating a formal written report and oral presentation.

Outline of the 1973 Allende Coup in Chile and Pinochet's Junta (this video under CC-BY-SA). Created by Sal Khan.

There are a number of European alliances that contributed to the broad scope of World War I. Prominent among these are the 1839 Treaty of London, which promised that the United Kingdom would protect Belgium's neutrality, the 1879 Dual Alliance treaty between Germany and Austria-Hungary to protect each other in the event of Russian attack, the 1892 Franco-Russian Military Convention that promised mutual assistance in the face of attack, the Triple Entente linking the United Kingdom and France (and later Italy), and the Triple Alliance linking Germany, Austria-Hungary, and Italy (at first). Created by Sal Khan.

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Welcome to Microbiology, an OpenStax resource. This textbook was written to increase student access to high-quality learning materials, maintaining highest standards of academic rigor at little to no cost. Data dashboard

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Download for free at https://open.oregonstate.education/microbiology

Publication and on-going maintenance of this textbook is possible due to grant support from Oregon State University Ecampus.

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Allie has a new basketball. She has a hard time finding someone to play with her because they believe basketball is a boys game. Allie continues to practice and play, despite their opinions.

Poster shows a map of Ireland and the battalion insignia. Title from item.