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 aspects of the task and its potential use.

Fertilization is the combining of male and female sex cells. When a pollen grain touches the top of the pistil, called the stigma, it forms a tube through which male sex cells travel downward into the ovary. An egg is fertilized inside the ovary.

In this special revised and updated feature for Black History Month, teachers, parents, and students will find a collection of NEH-supported websites and EDSITEment-developed lessons that tell the four-hundred-year old story of African Americans from slavery through freedom and citizenship to the presidency.

As a comet orbits the sun, solar wind pushes the gases outward in a trailing tail.

A Categorized and somewhat sequential listing of websites addressing particular topics and eras of history from Edtech Teacher

This animated Math Shorts video explains absolute value, as demonstrated on the number line and through a real-life example. In the accompanying classroom activity, students watch the video and then play a game in which they move a penny along a number line in positive and negative directions. As they play, they use absolute value to track the total distance that the penny moves. To get the most from the lesson, students should be comfortable determining distance between positive and negative numbers on a number line.

This animated “Math Shorts” video explains the term additive inverse and provides several examples that demonstrate the concept. In the accompanying classroom activity, students create equations and solve problems that involve adding groups of negative and positive integers that sum to zero. To get the most out of this activity, students should be familiar with plotting positive and negative integers on a number line.

In this video, learn how photographers use dilations to print the same photograph in larger or smaller sizes. In the accompanying classroom activity, students consider how dilation is a geometric application of scale factor. After a brief refresher on scale, students watch the video. Then, they apply what they have learned by creating larger and smaller dilations of a picture, using the coordinate plane as their canvas. Students consider how both scale factor and the center of dilation influence the size and placement of the drawings they make.

In this video, learn how writing an algebraic equation can help solve a real-life scenario—in this case, determining in advance when to buy a supply of cat food. Learning how to translate a real-life scenario to mathematical language is an important skill. In the accompanying classroom activity, students practice developing expressions and equations from story problems. Special attention is paid to identifying the variable. Students also take turns as mathematicians, coming up with some of their own scenarios for their classmates to solve.

Homepage for the Northern Ute Tribe, with links to current information regarding, and affecting, tribal life.

All animation techniques are painstaking, but that of painting on glass is especially so. This unusual medium succeeds impressively in capturing the ghostly presence of Hamlet's father and the agonized indecision of Hamlet himself, in this classic depiction of corruption and revenge.

This is an example of how teachers and students can create digital stories using Microsoft Sway. There are various ways to make stories engaging and innovative.

The Iris Center provides a wealth of resources for Inclusive Literacy instruction for students of all grade levels. The Iris Center offers modules for content area teachers who are often frustrated by the poor reading abilities of many of their students. it is important for content-area teachers to understand where reading breakdowns occur and how they can effectively and efficiently teach the skills necessary for students to read and understand complex, content-area text.