New! Integrating Technology: Seeing Atoms: STM
9th - 11th
In this atom activity, students learn about the scanning tunneling microscope and answer questions about its use, how it works and its ability to see electrons in atoms.
A Model of a Scanning Tunneling Microscope
Ninth graders explain how a scanning tunneling microscope works. For this chemistry lesson, 9th graders construct atomic models and simulate how their images appear under the STM. They discuss the limitations of their atomic model.
Measuring with a Microscope
After considering the importance of scale, microbiologists measure the field of view for the 40X and 100X objectives of a compound light microscope. With this information, they calculate the size of a paramecium and a corn stem cell. They also calculate the field of view for the high power objective so that they can use it to determine size. Because of the math and cognitive ability required, the lesson is geared toward high school biology scholars. A well-written lab sheet is provided.
What Is Inside the Atom?
Four lessons make up this mini unit about atomic structure and spectra. A pretest is provided to give an idea of what is already known about the atom. Through a series of demonstrations and lecture, you present the information to young chemists. They construct a fruit model of the boron atom. They fill in a chart using the periodic table of elements. They compare and contrast two potatoes as an example of how isotopes are related. Asides from the dissection of a fried fish head, this is a terrific set of lessons for introducing the atom and radioactivty.
Thinking with the Eyes
What does a human hair look like at 40 times its normal size? Young scientists find out the answer to that question and more in an introductory microscope activity. In the description, it says the investigation is intended for ninth grade honors biology, but it seems more appropriate for middle level life science, or wherever learners are introduced to microscope use in your district.
In this chemistry review worksheet, students read about atoms and the periodic table and they complete a chart using the periodic table to find the atomic number, atomic mass and group of given elements. Students answer 5 questions about the elements and they make a bar graph of the mass numbers of the 10 most common elements in living organisms.
Tools of Magnification
Life science learners need to be able to use a microscope. With this comprehensive resource, they first experience how lenses and magnification work, and then get familiar with using a compound microscope. Tremendous background information, detailed set-up and procedure instructions, and even a video that acts as a teaching guide, work together to thoroughly prepare you to implement this classic and vital lesson.
The Virtual Electron Microscope
Students explore the world of the very small using a Flash plug-in Virtual Electron Microscope. They complete and discuss an activity in which unknown samples are placed under the computer simulated microscope to determine where the cells came from. Hints for cell types and a self checking system make this seem like a game.
What is an Atom?
Third graders understand that the smallest particle is an atom. In this matter lesson, 3rd graders make a piece of aluminum smaller and smaller to see that what's left is still aluminum. Students recognize that cutting into smaller pieces can't change aluminum but removing atoms can.
Guess What? A Lesson About Atoms
Students examine mystery objects to understand that every object is made up of mass.In this mass lesson, students observe, compare and draw inferences about objects and their mass. Students later extend this to the microscopic components (atoms) of objects. Students may view a 3-D model of an atom.
Building Molecules From Atoms
Students explore how atoms interact with each other to form molecules. Observations of both different atoms and different molecule formations be made, and model building as a technique to make these observations,
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