This site explores the microscope in great detail. Content includes a focus on the microscope's basic functions (including a general diagram), the history of the microscope, each feature of the microscope, differing objectives,...

Understand how organisms acquire energy and how that energy is passed from one organism to another through food webs and their constituent food chains.

A cross-curricular unit to explore how human health is impacted by pesticides and fertilizers. The lesson comes out of the Chicano movement which studies the health of migrant workers due to agricultural practices. The unit was developed...

"Use this animation to compare the relative sizes of cells and organisms sitting on a pinhead. See the size of these nearly invisible without magnification" View dust mites dwarf pollen grains and human cells. In turn, bacteria and...

An interactive Java tutorial that allows you to view several animals using electron microscopy. You are able to adjust the focus, contrast, brightness, and magnification to optimize specimen appearance.

Many computer products have built-in accessibility options such as text-to-speech, screen magnification options, or voice input controls. Learn what some of these optional features are and how to integrate them into instruction and...

Almost 100 images of Nebulas are posted on this amazing site. Magnifications, exposure times, and the name of each nebula are provided.

Almost 100 images of Nebulas are posted on this amazing site. Magnifications, exposure times, and the name of each nebula are provided.

Numerous high quality images of galaxies can be found in this site. Names, exposure times, and various magnifications are provided.

Numerous high quality images of galaxies can be found in this site. Names, exposure times, and various magnifications are provided.

Students can use this interactive tool to explore a Mandelbrot set of fractals. As they increase magnification up to 250,000,000 times, they keep returning to an image similar to the one they started with.

Looks at the differences and similarities between a light microscope and an electron microscope. Discusses their structure, how images are formed, their resolution and magnification, how color is manifested, their portability, cost, and...

A discussion of how to make a refraction exhibit using a Fresnel lens. Consists of assembly instructions and a "To do and notice" section.

This is a site full of information about various microscopes and the objects and processes scientists study with them. Includes timelines and interactive simulations.

In Module 5 Lesson 1 of this course on spreadsheets, students learn how to work with large spreadsheets that extend beyond the screen. They will change the view, use split windows, freeze rows and columns, remove gridlines, etc. Includes...

Learning activities allow students to learn about tools for making science observations such as a magnifying lens and ruler. Then students describe how macroinvertebrates are adapted to their aquatic environment.

In this activity, students use a virtual biology lab to perform investigations and learn lab procedures using compound and dissecting microscopes to look at a variety of animal and plant cells.

Informative site for those who need assistance with computing needs due to low vision or blindness. Many links provided to arrive at a solution!

Try these five self-checking quiz questions over the threats to the loss of biodiversity on Earth.

This site from Georgia State University Physics Department gives a discussion of the manner in which light is refracted by refractive telescopes. Discusses the Galielean telescope and the astronomical telescope.

In this instructional activity, students will view their finger from various viewing distances to discover that their visual field is limited and a magnifying glass is a tool that can help make something look bigger. Students will record...

View a video or a click-through a slideshow to find out how the SEM works. In addition, find an interesting gallery of magnified images captured with an SEM, links to related sites, and a teacher resource section.

Explore properties of light by making a pinhole magnifier using simple materials and a light source.

Demonstrate for students how a round bowl of water can act as both a magnifier and a lens.