ingridscience

Whales

Summary
Students touch real whale bones, and learn about blue whales
Curriculum connection (2005 science topic)
Life Science: Characteristics of Living Things (grade K)
Life Science: Needs of Living Things (grade 1)
Life Science: Animal Growth and Changes (grade 2)
Procedure

What are these bones? Who do they belong to? They are big! They are whale bones. (show blue whale vertebrae, grey adn right whale ribs and ear, sperm whale tooth, baleen)

If the individual bones are this big, how big is a whale?
Whales are bigger than us. Show the relative sizes of a person and an orca.
Some whales are very big. The museum I come from has a skeleton of a blue whale.
Is it bigger than us? Is it bigger than an elephant? Is it bigger than a dinosaur? It is the biggest animal that ever lived. (Show relative sizes of these animals).

Touch these bones. Are they heavy? What do they feel like? What do they smell like? (Show many bones that can be handled).

Where are your bones? Can you find your skull, vertebrae, teeth, ribs (same bones as the animal bones they are touching and seeing).
Show flipper X-ray and look at their own hand.

These bones have been cut so you can see inside them.

How do you think whales talk?
Listen to blue whale song.
What are they saying?
Can you sing their song?

You have learned a lot about the blue whale and other whales: how big it is, what it's bones inside are like, and how it talks.
Read Big Blue Whale.

Notes

This lesson uses whale bones from a museum collection.

Grades taught
Gr K

Eye dissection

Summary
Cow eye dissection performed as a demonstration. Parts of the eye identified.
Science topic (2005 curriculum connection)
Life Science: Needs of Living Things (grade 1)
Life Science: Animal Growth and Changes (grade 2)
Life Science: Human Body (grade 5)
Materials
  • cow's eye (less easy to get from butchers now - try a science supply store)
  • razor blade
  • sharp scissors
  • tray
  • newspaper
  • soap and water to wash afterwards
Procedure

Directions from the Exploratorium procedure modified slightly:

Students can touch the eye before starting (then they should wash hands before doing another activity).

Cut off the fat. This protects the eye.
Make a small nick in the sclera to let some vitreous humour come out, then cut the eye in half so the front is separated from the back.
Here is the pupil, a hole - you can look through it now. Pull out the iris (black in cows).
The sclera is really tough - it protects the front of the eye - hear the layers with the blade.

Take out the lens.
If it is intact, put it on newsprint to see it magnify the words.
(The lens is good for the students to touch).

[Maybe take a break and add other lens activities in here.]

Look at the back of the eye.
Shiny tapetum in the back of the eye. Cow's are awake at night.
The pink retina converges at the blind spot.
The optic nerve emerges at the back of the blind spot.

Grades taught
Gr K
Gr 1
Gr 2
Gr 3
Gr 4
Gr 5

Market Meats

Summary
Meat shop that sells animal parts including bones, eyes, brain etc
Curriculum connection (2005 science topic)
Life Science: Needs of Living Things (grade 1)
Life Science: Animal Growth and Changes (grade 2)
Life Science: Human Body (grade 5)
Type of resource
Store
Resource details

Market Meats, 2326 West 4th Ave. at Vine, Vancouver

Bone slice puzzle and structure

Summary
Look at the structure inside a large animal bone. If a long bone can be made into slices, students can assemble them into a complete bone.
Science topic (2005 curriculum connection)
Life Science: Animal Growth and Changes (grade 2)
Life Science: Human Body (grade 5)
Materials
  • cow bone, sliced into sections (by butcher) and cleaned (with hydrogen peroxide)
Procedure

Assemble the slices of bone into a complete bone. Cues to how they fit together include the outside shape of the bone, the placement of the marrow hole, spongy bone and the hole for a blood vessel.

Marrow is inside bones. Red marrow, in spongy bone, makes blood cells (red and white). Yellow marrow, in the bone shaft, stores fat.

Bone slices like this can be used to make prints, if you are willing to let them get inky.

Grades taught
Gr 1
Gr 2
Gr 3
Gr 4
Gr 5

Sour candy chemistry

Summary
Add candies to a baking soda solution, to confirm or predict which ones are the sour and regular candies.
Materials
  • candies of the same type, some sour, some regular
  • tray with wells e.g. paint tray or ice cube tray
  • baking soda
  • small scoop or coffee stir stick
  • water in a squeeze bottle
Procedure

The best candies to use are the ones that look the same in regular and sour form.
Regular skittles are smooth whereas sour skittles have acid crystals on the outside so they look quite different.
Some chewy candies (e.g. fuzzy peach have sugar crystals on the outside, so they look similiar in regular and sour form.

Explain/review with students that anything sour will have a chemical reaction with baking soda, and make bubbles.

Students use the coffee stir stick to add a small scoop of baking soda to each of several wells of their tray. Add water into the wells and stir, to dissolve the baking soda and make a concentrated baking soda solution.

Distribute candies (or a cut piece of a candy if they are large) to the students. If they are indistinguishable from each other, they should be labelled A, B etc.
Students add a different candy to each well of their tray, and look at any bubbles formed. They should decide which candy gives off the most and least bubbles. Then they can predict with candy is the most and least sour.
Taste to check!

If not done already, discuss the chemical reaction:
The baking soda (HCO2) reacts with the H atoms of the sour candy coating/inside to make carbon dioxide (CO2) gas.
Students can use molecular models to figure out the reaction: give them the starting molecules, ask them to make water (H2O) and figure out what other molecule is made. When they use up all the atoms and bonds, and fill all the holes on the atoms, they should arrive at CO2, which is a gas, and makes the bubbles that they see.

Grades taught
Gr 4
Gr 5
Gr 6
Gr 7

Urban Source

Summary
Recycled art and craft materials in bulk.
Type of resource
Store
Resource details

3126 Main Street, Vancouver

Notes

Always have coloured acetates (red and blue most useful).
Sometime have pieces of scratched plastic to make a spectrum.

Comic strip of the life of a deer

Summary
After assembling the deer skeleton, discuss how it died, then draw a comic strip of it's life and death. Optionally use graphic techniques to make time go slower and faster.
Curriculum connection (2005 science topic)
Life Science: Animal Growth and Changes (grade 2)
Life Science: Ecosystems (grade 7)
Procedure

Assemble the deer skeleton.

Ask students what they noticed about the skeleton that might give us clues about its life and what happened after it died.
Listed in probable order of events:
Probably had bad toothache before it died, as a molar is missing on one side. The gum would be rubbed by the opposite sharp teeth.
How did it die? Maybe got it’s foot stuck in a boulder, or broke it’s leg. Maybe it got an bacterial infection from the damaged gum. Maybe it caught a disease from another deer. Maybe attacked by a predator.
Missing lower half of a leg. Likely that another carnivorous animal took the leg after the deer had died.
Tooth marks on the skull. Small rodents scraped the last of the flesh away.
The bones were white when I found them. Beetles, worms, bacteria and fungi ate as much as they could.

Comic strip art - the story of how this deer died.
Either do a short comic strip, using the attached worksheet, as well as a larger drawing of the deer skeleton (see first photos).
Or make a longer comic strip of how the deer died and what happened to its body as it is recycled into other living things (see last photos).
In this more detailed comic strip, use tricks of graphic artists to show how fast events are happening. Some events will take a long time (e.g. the years of toothache, the slow decompostion of the body by bacteria and fungi) and some will happen fast (e.g. a predator killing the deer, the small rodents eating the meat from the bones).
Quote from Understanding Comics by Scott McCloud: “Each panel shows a frozen moment in time. Between the panels, our mind fills in, to create the illusion of time and motion.”
From experience we know about how much time has passed between panels (show two pairs of images in the centre of p.100). But the graphic artist can emphasize and lengthen or shorten the time between panels using some tricks: (page numbers from Understanding Comics and from Bone: Out from Boneville by Jeff Smith):
1. Shape of the panel: Lengthen/shorten a panel to make more/less time pass. Understanding Comics p.101. Bone p.18, 36.
2. Use visual complexity in a panel or add dialog, so that it takes time for the reader to move through the panel, and there is a sequence of events. Understanding Comics p.95. Bone p.18, 49. With less visual complexity and no dialog, the reader will move faster through the panel, and time will seem to go faster. Bone p.98
3. Number of panels: draw two or more panels the same to show time passing. 'Pause panels'. Understanding Comics p.100. Bone bottom of p.41, 52.
4. Closure between the panels: widen/narrow the space between the panels for time passing slowly/fast/simultaneous events. Understanding Comics p.101. Bone p.93.
5. Border of panel: borderless panel gives a timeless quality. Leave border off top or run panel off side of page. Understanding Comics p. 102, 103. Bone p.26.

Attached documents
Grades taught
Gr 2
Gr 3
Gr 4
Gr 5
Gr 6