What are the six simple machines taught in elementary school?

Lever, inclined plane, wedge, screw, pulley, and wheel and axle. Most grade 3-5 standards ask students to name all six, match each to an everyday object, and explain how it makes a task easier.

How do I explain a lever and fulcrum to a 3rd grader?

Start with a seesaw: the bar is the lever, the pivot point in the middle is the fulcrum, the person you're lifting is the load, and your push is the effort. Then show that sliding the fulcrum closer to the load makes lifting easier. Sessions build the vocabulary around examples the child already knows.

Is a screw really a simple machine?

Yes — a screw is an inclined plane wrapped around a cylinder. The threads are a very long, gentle ramp, which is why turning a screw many times takes less force than hammering it straight in. This one causes the most confusion and gets direct attention when it comes up.

What simple machine projects can we do at home?

Ramps made from books and a board, a ruler-and-pencil lever, a string-and-spool pulley, and a simple-machine scavenger hunt around the kitchen all work well. Evelyn can talk a learner through what to observe and what to record, though setup and any tools are handled by you.

Simple Machines

Elementary (3-5) · Science

Simple machines are the six basic tools people have used for thousands of years to make a job easier: the lever, inclined plane, wedge, screw, pulley, and wheel and axle. In grades 3-5, the goal is to recognize each one in everyday objects, name its parts, and explain what it actually changes about a push or pull. Evelyn Tutor works through this by talking with the learner about objects they can see around them — a seesaw, a door handle, a bottle cap, a wheelbarrow, a flagpole rope — and asking them to explain where the effort goes and what the machine does with it.

Start a session on Simple Machines

What this covers

Identifying all six simple machines and giving a household example of each (scissors, ramp, screwdriver, axe, blinds cord, doorknob)
Labeling the parts of a lever — fulcrum, effort, and load — and predicting what happens when the fulcrum moves closer to the load
Explaining the trade-off: a ramp or long lever lets you push with less force, but you have to push over a longer distance
Telling apart machines that get confused, especially wedge vs. inclined plane (one moves, one stays still) and screw vs. plain inclined plane wrapped around a cylinder
Finding the simple machines hidden inside a compound machine such as scissors, a bicycle, a can opener, or a wheelbarrow
Describing in writing or speech how a chosen machine makes a specific job easier, using the words effort, load, and force

Where learners get stuck

Thinking a simple machine means you do less total work, or that it 'creates' extra force out of nothing: Kids hear 'makes work easier' and take it literally. The machine spreads the same job over a longer distance so each push is smaller — nothing is added. Sessions get at this by having the learner count how many steps up a steep ramp versus a gentle one.
Assuming every pulley reduces the force needed: A single fixed pulley (like a flagpole) only changes the direction of the pull, so you still pull the full weight — just downward instead of upward. Textbook pictures rarely distinguish fixed from movable pulleys, so learners generalize from one drawing.
Calling any round thing a wheel and axle: A rolling log or a marble is not a wheel and axle; the two parts must be attached so they turn together, as in a doorknob or a pencil sharpener crank. Without the axle part, the learner misses why the doorknob counts and the ball does not.

What a session looks like

A session is a spoken back-and-forth. Evelyn names an object — a stapler, a slide, a wagon — and asks the learner which simple machine it is and why, then follows up on the reasoning rather than just marking it right or wrong. Learners are asked to move the fulcrum in their head and predict the result, to hunt for machines in the room they are sitting in, and to explain the distance-versus-force trade in their own words. Diagram-labeling and short written explanations from a worksheet or homework packet can be talked through step by step.

Helpful to know first

Understanding that a force is a push or a pull
Knowing that heavier objects take more effort to lift or move
Comfort with comparing measurements, such as which ramp is longer or steeper
Some hands-on experience with common tools and household objects (scissors, screwdriver, ramp, seesaw)

Questions

What are the six simple machines taught in elementary school?: Lever, inclined plane, wedge, screw, pulley, and wheel and axle. Most grade 3-5 standards ask students to name all six, match each to an everyday object, and explain how it makes a task easier.
How do I explain a lever and fulcrum to a 3rd grader?: Start with a seesaw: the bar is the lever, the pivot point in the middle is the fulcrum, the person you're lifting is the load, and your push is the effort. Then show that sliding the fulcrum closer to the load makes lifting easier. Sessions build the vocabulary around examples the child already knows.
Is a screw really a simple machine?: Yes — a screw is an inclined plane wrapped around a cylinder. The threads are a very long, gentle ramp, which is why turning a screw many times takes less force than hammering it straight in. This one causes the most confusion and gets direct attention when it comes up.
What simple machine projects can we do at home?: Ramps made from books and a board, a ruler-and-pencil lever, a string-and-spool pulley, and a simple-machine scavenger hunt around the kitchen all work well. Evelyn can talk a learner through what to observe and what to record, though setup and any tools are handled by you.