ingridscience

Dry ice bubbles

Summary
Use detergent with dry ice bubbling in water, to produce bubbles filled with carbon dioxide gas.
Science topic (2005 curriculum connection)
Physical Science: Properties of Matter (grade 2)
Materials
  • dry ice and gloves to handle
  • warm water
  • large empty drink bottle
  • plastic tubing
  • small styrofoam cup
  • dish soap mixed with water in a small container
Procedure

Push one end of the tubing through the base of the polystyrene cup.
If a funnel is available attach to the other end of the tubing, using tape if necessary to seal any gaps.

Add warm water and a (gloved) handful of dry ice pellet to the bottle, to start the bubbling.
Place the funnel over the bottle, so that dry ice is pushed along the tubing.

Once dry ice gas is coming out of the tubing at the end with the styrofoam cup, dip the rim of the cup into the container of detergent.
A large bubble should form with swirling dry ice inside.

The dry ice bubbles will fall quite rapidly, as carbon dioxide is heavier than air.
They are fun to have pop on your hand, when the dry ice cloud flows out of them.

As the dry ice bubbling in the bottle slows, replace the now cold water with more warm, and add more dry ice pellets if necessary

Grades taught
Gr 2
Gr 3

Earth Science Collection

Summary
A random collection of earth science activities.
Curriculum connection (2005 science topic)
Earth and Space Science: Renewable and Non-Renewable Resources (grade 5)
Procedure

Do the activities in turn.

The fluorescence activity is only the fluorescent rock.

Grades taught
Gr 7

Rock cycle crayon model

Summary
Shave crayons to make different "minerals", then compress and melt them to form "sedimentary" and "igneous" rock.
Science topic (2005 curriculum connection)
Earth and Space Science: Renewable and Non-Renewable Resources (grade 5)
Earth and Space Science: Earth's Crust (grade 7)
Materials
  • crayons of different colours
  • pencil sharpener
  • foil mini pie cases
  • greaseproof paper
  • hammer
  • hair dryer
Procedure

Use a pencil sharpener to make crayon shavings of different colours into the pie cases.
This represents sand and mud made up of different "minerals".
Fold several colours into greaseproof paper and hammer it flat. The minerals are pressed together into one piece of "sedimentary rock".
Place the pieces of sedimentary rock into a pie case, then heat with a hair dryer. As they start to melt together they represent "metamorphic rock", then as they flow together completely they are "magma" inside the earth. As they cool to form a mixture of minerals they are "igneous" rock.

Notes

Needs reworking to more accurately represent what happens in the rock cycle.

Do with just one colour crayon: https://serc.carleton.edu/sp/mnstep/activities/34972.html
Nice formation of different kinds of igneous rock (resolidify melted crayon fast and slowly).

Do all on a piece of foil.
Use pencil sharpener/knife as a scraper to add a layer of one colour, fold over foil to press, then add another colour, fold over to press and stand on it.
Layers formed but still flaky - sedimentary.
Metamorphic - somehow give it a little heat so it starts to blend.
Fold up the sides of the foil and put in a tray of just-boiled water for melting. Better than a flame, which makes the crayon give off fumes.

Grades taught
Gr 7

Chemistry activities selection

Summary
A diverse selection of appealing chemistry activities for discussion of molecules and chemical reactions.
Curriculum connection (2005 science topic)
Physical Science: Chemistry (grade 7)
Procedure

These fun activities are not particularly connected, except that they can all be discussed in terms of chemistry.
I used them in camp and workshop settings, but can be adapted for the classroom.

Optional: hand out name tags, that depict the molecules to be used in the workshop (see image for baking soda/soda drink/rocket/bubbles lesson).

Introduce the building blocks of chemistry through molecular models, and discuss what they represent.

Do a selection of the activities, focusing on the chemistry in each case.

Notes

CAGIS workshop covered baking soda/vinegar reaction, then soda drink, then rocket, then bubbles.
Eton Arrowsmith Camp played with molecule models, then did silly putty, soda drink, rocket.

Grades taught
Gr K
Gr 3
Gr 5
Gr 7

Motors

Summary
Make a simple motor to see how they work. Use a motor to make an art scribbling machine.
Procedure

Make a simple hand-wound motor, to show students how motors work.
Then use motors for other activities:
Build a motor into an electric circuit, and allow motor free-play, including making fans, buzz saws and spin art.
Use a motor to drive a scribbling machine. Offsetting the motor (making it wobble) changes the art made.

Grades taught
Gr 5
Gr 6
Gr 7

Biodiversity

Summary
Explore the diversity of living things through activities that highlight life's variation and the connections between living things.
Materials
  • materials in the activities
  • tree of life (evolutionary tree) poster e.g. this one
Procedure

Use this awesome website: onezoom.org

Activity grouping ideas:

Biodiversity in a Food web and Pond life
Model a food web of the temperate rain forest, and understand why biodiversity makes an ecosystem resilient.
Look together at Tree of Life poster, to find the living things in our forests, and see the array of other living things that live in their own ecosystems.
Pond dipping activity to discover the biodiversity of tiny pond animals that we do not usually notice.

Biodiversity and Biomes
Look at a Biome map, discuss their broad climate differences, including our temperate rainforest of the Pacific Northwest.
Optional: Sun's angle on earth activity to explain the differences in climate in biomes.
Model a food web of the temperate rain forest.
Camouflage challenge to model how living things in any biome use camouflage to increase their chances of survival.
(Also see Biomes lesson plan for alternate activity ideas on this topic.)

Biodiversity and Life cycles
Look together at Tree of Life poster, and note the diversity of living things, and how they are similar and different from each other.
Food web model including deer, to show how living things depend on each other for their survival.
Build a deer skeleton with discussion on how the deer died, and what ate it after its death.

Biodiversity of animals
Look together at Tree of Life poster, and note the diversity of living things, and how they are similar and different from each other.
Do two of these activities.
Find animals on the poster with bones, then build a deer skeleton, asking students to find the same bones in their body.
Find all the animals on the poster that do not have bones (a lot of them!) then look at an animal without bones: worm observation.
Pond dipping to discover the diversity of tiny pond animals, then find pond water life on the poster e.g. shrimp, floating pond plant.

Biodiversity and survival
Highlight how many living things there are in a tiny square of ground: habitat survey with food web. Extrapolate to the larger world and the enormous amount of biodiversity.
Animals are often coloured like their surroundings to help them hide (whether they are prey or predator). Students can use their same square for the camouflage challenge.

Plant biodiversity: flower colours and plant smell molecules
Flower colour activity to show how flowers use just a few molecules to make all their colours, which attract pollinators.
Plant smells also attract pollinators (and have other uses):
Smell molecule posting game for younger students.
Matching plant smells and discovering their smell molecules for older students.

Notes

The Food Chains lesson has similiar activities, but with a different discussion focus.
Pond dipping and posting game also make up the Classification lesson, but with a different discussion focus.

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

Chemistry of plants and soil

Summary
Do soil tests, and understand the role that plants have in the nitrogen cycle.
Curriculum connection (2005 science topic)
Life Science: Needs of Living Things (grade 1)
Life Science: Plant Growth and Changes (grade 3)
Physical Science: Chemistry (grade 7)
Procedure

We will look at the chemistry of our environment.
What is chemistry? Everything is made up of molecules, too small to see, even the air.
Show model of molecules, made of atoms. We will show what is happening with the real molecules using these models. These molecules interact with each other, break apart and form other molecules.
We will look at the chemistry in soil and how living things use the soil molecules.

Walk to collect soil then back in the classroom, do soil tests.

Look at pH results and discuss how the pH changes (see soil test activity).

While the colour is developing for nitrogen test, use molecule models to look at the chemistry of nitrogen in the environment:
Nitrogen cycle with molecule models

Then look at nitrogen and phosphorus and potassium test results.
Discus importance of these other minerals (see soil test activity).

Many other minerals needed by plants.
We eat the plants and get these minerals too, and use them in our own chemistry.

Grades taught
Gr 6
Gr 7

Temperate rainforest plant features

Summary
Compare our temperate rainforest plants to those in a tropical rainforest, and find features they have in common.
Science topic (2005 curriculum connection)
Life Science: Needs of Living Things (grade 1)
Life Science: Plant Growth and Changes (grade 3)
Life Science: Habitats and Communities (grade 4)
Life Science: Ecosystems (grade 7)
Materials
  • temperate rainforest to walk in
  • clipboards and worksheet
Procedure

We live in a rainforest. What are differences between our rainforest and tropical?
Look for plants that have similar features to tropical rainforest plants, using the worksheet:

Find canopy, understory and forest floor layers
Find living things of the forest floor: ferns, fungi, mosses (not all plants)
Vines
Drip tips
Epiphytes
Evergreen trees (conifer instead of broadleaf)

Discussion:
Review what they have found.
Talk about how the soil is different between tropical and temperate rainforests. Although they both have relatively poor soils, temperate soil is rich compared to tropical rain forest soil. This is because the temperate rainforest is colder, and the soil has more acidity from the coniferous needles dropped, so decomposition is much slower, therefore more nutrients remain in the soil.

Grades taught
Gr 4

Plants of Temperate and Tropical rainforests

Summary
Look at leaf features and types of plants that are common to tropical plants and our native rainforest plants.
Curriculum connection (2005 science topic)
Life Science: Characteristics of Living Things (grade K)
Life Science: Needs of Living Things (grade 1)
Life Science: Plant Growth and Changes (grade 3)
Life Science: Habitats and Communities (grade 4)
Materials
  • plants with drip tips: indoor tropical plants, or planted beans etc
  • temparate rainforest to walk in
Procedure

This lesson will look at some features of leaves and compare tropical plants with our temperate rain forest plants.

Leaf features activity with discussion of the purpose of the purpose coating and drip tips.

Walk in the local forest, looking for types of plants and temperate rainforest plant features the same as in a tropical rainforest.

Return to classroom plants/planter boxes.
Ask which of the plants have drip tips and waxy coatings, and if any of them are vines.

Grades taught
Gr 4

Chemistry of Living Things

Summary
Understand flower colour, plants smells, bee pheromones in terms of molecules.
Procedure

Do a selection of the activities to understand the molecules and chemical reactions underlying processes in living things.

Notes

For Tyee primary and lower intermediate classes I did flower colours, then posting game with plant molecule smells
For Tyee Ks I did flower colours, then smelled lilac, rosemary and lavender, discussing why they have these smells (to attract or repel insects).
For Tyee intermediates I did flower colour, then plant smell matches and molecules, then optional bee pheromone molecules.
Gordon Elementary did flower colours then posting game with smell molecules.

Could also add tastes

Grades taught
Gr K
Gr 1
Gr 2
Gr 3
Gr 4
Gr 5
Gr 6
Gr 7