Animal and Plant Cells!

Here are some images of onion and skin cells taken from our digital compound microscope. The cells have been dyed with different materials to allow for easier viewing.

Plant -Methyl Blue:

x100

x400

Plant - Iodine:

x100

x400

Skin Cells -                               x100

                                                 x 400

Viewing Microorganisms.

Students learned that cells are the basic unit of structure and function in all living things and all living things are made of at least one cell.  Today we looked at some of these single celled organisms.

Here are some pictures of a couple we looked at.

Volvox

Amoeba Proteus

Celestron Digital Microscopes

This week, students got to explore using the new Celestron Digital Microscopes. These microscopes were purchased with grant money awarded to the 7th Grade Science teachers by the Yarmouth Education Foundation (Thank you YEF!). Here are some shots students took of everyday objects. Can you identify any?

    

Starting from top left: Ring, Cheezit, Computer Screen, Eye with contact, Ear, Pencil case, Eraser, Mesh on the inside of a headset, Table, Zipper on computer case

Wow Bugs!

Today the students were introduced to a parasitic wasp, the Wow Bug.  

Here are some images at scanning and low power.

Starting to use Hand Lenses and Magnification

Today our students revisited their definitions of "What does it mean to be living?"

After that, they moved onto using hand lenses.  They studied text in their book as well as pennies to try to find distinguishing marks.  Many were able to locate initials of the artist who created Lincoln's portrait. 

 The rest of this week we will explore light compound microscopes, how to focus into a specimen and what a good scientific sketch is composed of.

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Reading and Worksheet - Your Habitat is in My Ecosystem.

This Google Document goes along with the reading, 

"Your Habitat is in My Ecosystem."

Click here to access.

Read the article “Your Habitat is in My Ecosystem” on pages 43-45 of the Macro to Micro text. Then answer the questions in the Google Document above.
Or click here to access the book on line.

You will also need the following worksheet on parts of a microscope.
Click here to access the picture.

Then read the following link giving you directions on how to use a light microscope.
Click here to access.