Skill companion: Science Solves Problems (Year 4) — reusable Human Endeavour scaffolds

← Back to the unitTip: in the print dialog choose “Save as PDF”.

Skill companion · Year 4 Science as a Human Endeavourseegongsik /au

Science Solves Problems: a skill companion

A small set of reusable sheets that grow one Human Endeavour idea: people use scientific explanations, such as how friction works or which materials are waterproof, to meet a need or solve a problem, and they weigh one solution against another. Print the scaffolds once and slot them into the science lessons you are already teaching.

AC9S4H02

consider how people use scientific explanations to meet a need or solve a problem

What a skill companion is

Science as a Human Endeavour is not a topic of its own. It grows inside the science units a class teaches all year, such as Food Chains and Habitats, The Water Cycle, Forces, Friction and Magnets, and Properties of Materials. So this pack is not a full term of lessons. It is three reusable scaffolds, a map of where they fit, and a short stand-alone lesson for teaching the idea on its own first.

Start here: five minutes

Read the pairing map on the next page: it shows a need and the science that helps in each Year 4 topic.
Print the need-idea-solution planner, one per child, whenever a topic connects to a real problem.
Print the weigh-the-solutions sheet, one per group, when there is more than one way to solve it.
Cut out the uses-the-science cards once. They are reused all year, and the blank cards fit any topic.
Run the one-page mini-lesson first if you want to teach the idea before folding it into a topic.

No science background needed

This pack is written for the busy generalist teacher. Each scaffold explains itself in plain words, and the answer sheet gives model responses, the card key and a quick three-level guide. The same explanation can solve problems both ways: less friction moves a trolley, more friction stops a slip.

On the board

This pack is the printable half of a free interactive unit. On screen, children press “Next step” in “From the friction idea to a wheeled trolley”, compare the three ways in “Pick a way to move the heavy crate”, and sort choices with “Uses the science” and “Does not” in “Does the choice use the friction idea to move the load?”.

seegongsik.com/au/y4/human-endeavour/AC9S4H02

Aligned to the Australian Curriculum V9 (AC9S4H02). This pack is original material from seegongsik, independently produced and not endorsed by ACARA. Curriculum content descriptors are (c) ACARA, licensed under CC BY 4.0. Free to print and use in class.

Where the idea fitsPairing map

Slot the idea into your science lessons

In every science unit, a scientific explanation helps someone meet a need. This map gives one for each Year 4 topic, the solution the explanation points to, and which scaffold to reach for. You do not run these as extra lessons; you fold them into the science you teach.

When you teach	A need or a problem	The science that helps, and a solution	Scaffold to slot in
Food Chains and Habitats (AC9S4U01)	Snails are eating the school’s vegetable seedlings	Blue-tongue lizards eat snails: rocks and logs give the lizards a home, with no snail bait to harm the food chain	Need, idea, solution
The Water Cycle (AC9S4U02)	The school garden needs water in the dry months	Rain can be caught and stored, and shade slows evaporation: a rainwater tank and mulch on the soil	Need, idea, solution, then weigh the solutions
Forces, Friction and Magnets (AC9S4U03)	A heavy load to move; a slippery wet path	Wheels lower friction, so a trolley rolls; rough surfaces raise friction, so grip strips stop slips	Weigh the solutions, then the path cards
Properties of Materials (AC9S4U04)	Sandwiches get soggy in a wet school bag	Waterproof materials let almost no water through: a container with a tight plastic lid	Need, idea, solution, then the lunch cards
Any science topic	A problem children notice at school or home	Children name the science idea first, then the solution it points to	Need, idea, solution first

The three moves, and the picture that backs each one

When you want a worked example on the board, open the interactive unit and use the picture that matches the move children are working on.

Follow a science idea from a need to a solution: “From the friction idea to a wheeled trolley”.
Weigh what each solution gives and gives up: “Pick a way to move the heavy crate”.
Tell a choice that uses the science from one that does not: “Does the choice use the friction idea to move the load?”.

How the scaffolds build the idea

The need-idea-solution planner traces a solution back to the explanation that makes it work, with a worked example to copy. The weigh-the-solutions sheet compares three solutions to one need, what science each uses and what each gives up. The uses-the-science cards sharpen the judgement: a choice uses the science when the explanation is what makes it work.

Scaffold 1 · Need, idea, solutionOne per child

From a science idea to a solution

NameClassDate

People use what science explains about the world to solve real problems. Here is one, then yours.

A worked example: the trolley

The need	Move a heavy load across a room without dragging it.
Who has it	Shop workers, removalists, anyone moving something heavy.
The science explanation	Friction fights a sliding load; a rolling wheel meets far less friction.
The solution	A trolley: the load sits on a platform on wheels.
How the explanation makes it work	The wheels roll instead of scraping, so the friction nearly vanishes.

Your problem

The need
Who has it
The science explanation
The solution
How the explanation makes it work

Teacher note: the science explanation comes before the solution. If a child has a solution but no explanation, ask: why does it work?

Scaffold 2 · Weigh the solutionsOne per group

More than one way to solve it

NameClassDate

The need: The school path gets slippery when it is wet, and children slip on the slope.

The science idea: Friction is the force that stops shoes sliding. Rougher surfaces give more friction; a smooth, wet layer gives less.

Solution	Does it use the science idea? How?	Good points	Not so good
Grip strips across the slope
A sign saying “Slippery when wet”
A rough-surfaced new path

Our choice, and why

Now weigh three solutions to a need of your own

Solution	The science it uses	Good points	Not so good

Scaffold 3 · Uses the science? cards (cut out)Reuse all year

Does the choice use the science?

Cut out the cards. Lay down one problem card, then sort its choice cards into two piles: choices that use the science idea to solve the problem, and choices that do not.

THE PROBLEMThe wet path is slippery. Science idea: rougher surfaces give shoes more friction, so they grip.Path

Stick rough grip strips across the steepest part of the path.Path

Paint the path a bright colour.Path

Put up a poster of a smiling sun.Path

Sweep away the wet leaves, which make a smooth, slippery layer.Path

Wear shoes with deep treads on rainy days.Path

Write another choice:

Path

THE PROBLEMSandwiches get soggy in a wet school bag. Science idea: waterproof materials such as plastic let almost no water through.Lunch

Wrap the sandwiches in a cotton cloth.Lunch

Pack them in a container with a tight plastic lid.Lunch

Choose a wrap with a cartoon printed on it.Lunch

Line the bag with a waterproof plastic bag.Lunch

Use a beeswax wrap, which sheds water.Lunch

Write another choice:

Lunch

Teacher note: the two piles are “uses the science” and “does not”. The answer sheet lists which is which, and why.

Mini-lesson · Teacher planAbout 30 minutes

One science idea, two problems solved

Use this stand-alone lesson to teach the idea on its own, before you fold it into a science topic. The friction explanation solves two problems in opposite ways: wheels lower friction so a trolley moves a heavy load, and rough surfaces raise friction so a wet path stops being slippery.

We are learning to

trace a solution back to the science explanation that makes it work,
use a science explanation to suggest a solution to a problem,
weigh different solutions to the same need.

Success criteria

I can say which science explanation a solution uses, and why it works.
I can compare two solutions and choose one, giving reasons.

You need

a heavy box of books, and a toy car or a skateboard to stand it on (optional, for a quick demonstration),
the need-idea-solution planner and the weigh-the-solutions sheet (scaffolds 1 and 2),
the path cards from scaffold 3, one set per table, cut out ahead or by fast finishers.

Lesson flow (about 30 minutes)

5 min	Drag it or roll it? Drag the box of books across the floor, then stand it on the skateboard. Show the board (see the box). Ask: “Why is it so much easier on wheels? Which force has changed?”
10 min	Need, idea, solution Children read the trolley example, then fill their own rows for the slippery path. Ask: “For the trolley we wanted less friction. What do we want for the path?”
10 min	Weigh the solutions Groups fill the top table of the weigh-the-solutions sheet and choose one. Ask: “The sign is cheap and quick. Does it use the friction idea?”
5 min	Uses the science? Tables sort the path cards into the two piles. Ask: “Would this choice change the friction?”

Running it shorter? Stop after Need, idea, solution, and weigh the solutions in the next science lesson.

On the board

For a worked example, open the unit and press “Next step” through “From the friction idea to a wheeled trolley”. Then compare the three ways in “Pick a way to move the heavy crate”: each gives something and gives something up.

seegongsik.com/au/y4/human-endeavour/AC9S4H02

Watch for these ideas

Thinking a solution must be new or high-tech to use science.
Choosing a solution for how it looks rather than how it works.
Thinking friction is always bad; sometimes the problem needs more of it.

Make it easier, make it bigger

Easier: fill the planner for the path together, as a class.
Bigger: weigh three solutions to a need of the child’s own, on the bottom table of scaffold 2.

Answers and look-fors

The next sheet has model responses for both scaffolds, the uses-the-science key and a quick three-level guide.

Answers · For the teacherModel responses

Answers and look-fors

Need, idea, solution: the slippery path at standard

The need	The school path gets slippery when it is wet, and children slip on the slope.
Who has it	Every child and adult who walks down the path on a rainy day.
The science explanation	Friction is the force that stops shoes sliding. Rougher surfaces give more friction; a smooth, wet layer gives less.
The solution	Rough grip strips stuck across the slope.
How the explanation makes it work	The rough strips give shoes more friction, so they grip instead of sliding.

Weigh the solutions: the slippery path

Solution	Uses the science?	Good points	Not so good
Grip strips across the slope	Rough strips give shoes more friction exactly where the path is steepest.	Works every time it rains, and is cheap to stick down.	Strips wear smooth after a while and need replacing.
A sign saying “Slippery when wet”	It does not change the friction; it only warns people.	Quick and cheap, and reminds children to walk.	The path is just as slippery as before.
A rough-surfaced new path	A rough surface gives more friction all the way along.	Fixes the whole path for many years.	Costs the most and takes time to build.

Any choice with a reason is at standard; the grip strips use the friction idea and are quick and cheap, while the sign does not change the friction at all.

Uses the science? cards

Path (Forces, Friction and Magnets): The wet path is slippery. Science idea: rougher surfaces give shoes more friction, so they grip.

Choice card	Uses it?	Why
Stick rough grip strips across the steepest part of the path.	Yes	Rough strips add friction where it is needed most.
Paint the path a bright colour.	No	Colour does not change the friction.
Put up a poster of a smiling sun.	No	A poster does not change the path at all.
Sweep away the wet leaves, which make a smooth, slippery layer.	Yes	Removing the smooth layer gives shoes more friction.
Wear shoes with deep treads on rainy days.	Yes	Rough treads grip, giving more friction.

Lunch (Properties of Materials): Sandwiches get soggy in a wet school bag. Science idea: waterproof materials such as plastic let almost no water through.

Choice card	Uses it?	Why
Wrap the sandwiches in a cotton cloth.	No	Cotton lets water through, so it does not use the idea.
Pack them in a container with a tight plastic lid.	Yes	Plastic is waterproof, and the tight lid keeps water out.
Choose a wrap with a cartoon printed on it.	No	The picture does not keep water out.
Line the bag with a waterproof plastic bag.	Yes	It uses a waterproof material to keep everything dry.
Use a beeswax wrap, which sheds water.	Yes	A wax coating stops water soaking in.

A quick three-level guide

Move	Working towards	At standard	Beyond
Link a solution to the science	names a solution with no science behind it	names the science explanation a solution uses and why it works	shows the same explanation solving problems in more than one way
Use science to meet a need	suggests something that changes how it looks	suggests a solution that the explanation points to	improves the solution using the explanation
Weigh solutions	chooses with no reason	compares good and not-so-good points and chooses one with a reason	says which solution suits which situation, such as cost or time