Interactive
CK-12 Foundation

Cassegrain Telescope

For Students 6th - 12th
How does a telescope magnify images? Learners first watch a tutorial explaining the basic construction of a telescope. Then they interact with a simulation that allows for changes in the location and diameter of the reflecting mirrors....
Interactive
American Museum of Natural History

Cosmic Connection

For Students 6th - 12th
Do you see what I see? Individuals view eight images from the Hubble Space Telescope and then determine exactly what is being shown in the images. The pictures range from the rings of Saturn to views of billions of galaxies that take up...
Interactive
American Museum of Natural History

How Did the Universe Begin?

For Students 6th - 12th
The Big Bang Theory is more than a television show. Pupils read how Edwin Hubble observed other galaxies and noticed that the galaxies are moving away from each other. Scholars learn about the idea of the big bang and what happened next...
Interactive
American Museum of Natural History

What Do You Know About the Universe?

For Students 6th - 12th
The universe is full of a mystic matter people cannot see. Pupils respond to 10 questions about the stuff in the universe. Most of the questions involve the big bang theory and dark matter. Learners find out how astronomers have found...
Interactive
Las Cumbres Observatory

Agent Exoplanet

For Students 6th - 12th
Not everything revolves around the sun! Believe it or not, there are planets, called exoplanets, that orbit stars other than our sun. Learners use an interactive online resource to research several of these planets. They learn about the...
Interactive
American Museum of Natural History

Planetary Mysteries

For Students 6th - 12th
A website all about planetary mysteries—it's a one-stop-shop for all things, stars, planets, and space travel. Scholars read an astronomy overview to discover the page's big ideas, then choose from the plethora of resources, including...
Interactive
American Museum of Natural History

What is Astronomy?

For Students 6th - 12th
Go study the universe. Pupils learn seven aspects about astronomy and astronomers. They begin to learn about constellations; distance and motion between objects; gravity; the electromagnetic spectrum; dark matter and energy; and teams of...
Interactive
American Museum of Natural History

What Do You Know About Astronomy

For Students 6th - 12th
Develop an understanding of the universe. Learners answer 10 multiple choice questions about several topics in astronomy. Questions contain information about the age of the universe, gravitational attraction, galaxies, planets and comets...
Interactive
American Museum of Natural History

Planetary Mysteries

For Students 6th - 12th
Get to know our little part of the vast universe. Learners read about the common and not-so-common facts about each of the planets in the solar system. The interactive lesson includes a large amount of information as well as a quiz to...
Interactive
Curated OER

Look + Prepositions

For Students 4th - 6th
In this recognizing prepositions with the word look online/interactive activity, students fill in the blanks using the prepositions in the word bank to complete sentences. Students write 10 answers.
Interactive
Curated OER

Coordinates

For Students 6th
For this coordinates worksheet, 6th graders solve ten multiple choice questions by using their knowledge of coordinates on a grid. This is an interactive worksheet.
Interactive
Curated OER

Galileo Galilei Questions for Study

For Students 9th - 12th
In this online interactive philosophy instructional activity, students respond to 10 short answer and essay questions about Galileo's contributions to science. 
Interactive
Curated OER

There Is/Are - Counting Stars

For Students 4th - 6th
In this counting stars worksheet, students fill in the blanks to a passage, complete the questions, and write sentences with possessive forms. Students complete 3 activities.
Interactive
My Schoolhouse

Global Warming or Climate Change?

For Students 4th - 6th
In this online interactive global warming and climate change worksheet, students respond to 10 multiple choice questions regarding the information included in the provided paragraphs.
Interactive
Curated OER

Global Warming or Climate Change?

For Teachers 4th - 6th
In this online interactive global warming and climate change worksheet, students respond to 10 multiple choice questions regarding the information included in the provided paragraphs.
Interactive
Curated OER

TOEFLesque Quiz: Big News Events from the 1990s

For Students 8th - 12th
In this online interactive grammar skills lesson, students examine 10 sentences and identify the part of each sentence that is grammatically incorrect.
Interactive
Curated OER

Cosmic Collision

For Students 6th - 9th
In this cosmic collision activity, students explore interactive online website to study about the dynamics of different galaxies. They write short answers to 8 questions that follow.
Interactive
Curated OER

Phonics for Beginners

For Students 1st - 2nd
In this phonics worksheet, students choose the correct word that represents each picture. Students complete 20 multiple choice problems.
Interactive
Curated OER

The Natural World

For Students 3rd - 6th
In this nature learning exercise, students complete the sentences about nature by choosing the correct words. Students complete 11 sentences total.
Interactive
CK-12 Foundation

Ck 12 Exploration Series: Simulations: Physics: Cassegrain Telescope

For Students 9th - 10th
[Free Registration/Login Required] Learn about the law of reflection by curved mirrors and how the shape and size of a telescope impacts its observing capabilities.
Interactive
CK-12 Foundation

Ck 12 Ex. Series: Simulations: How Does a Telescope Collect and Magnify Light?

For Students 9th - 10th
[Free Registration/Login Required] A video and simulation designed to teach the effect of diameter, focal ratio, and the length of the eyepiece focal on a view through a telescope.
Interactive
Space Telescope Science Institute

Space Telescope Science Institute: Hubble Site

For Students 9th - 10th
Explore the universe and celestial phenomena made visible by Hubble. High-quality photos of planets, stars, nebulae, and galaxies, complete with individual descriptions, can be viewed online and downloaded for printing and personal use.
Interactive
Walter Fendt

Walter Fendt: Refracting Astronomical Telescope

For Students 9th - 10th
An app for investigating the operation of a refracting telescope. The location of the eyepiece and objective lens can be altered, and the focal point and path of light through the lenses can be observed.
Interactive
Georgia State University

Georgia State University: Hyper Physics: Lens Maker's Formula

For Students 9th - 10th
A discussion of the lens-maker's formula and its use in determining the effect of lens shape and index of refraction upon the magnifying power of a lens. Includes an interactive problem-solving section.

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