Curated OER
Wheels, Gears, and Compound Machines
Fifth graders read selected pages from their science text and explain forces affected by wheels and axles. They read and discover that gears transfer forces and that gear combinations relate to compound machines.
Curated OER
Household Tools
Students explore parts of a system. In this simple machines lesson, students discover that simple machines are composed of two or more systems. Students examine household tools and assess the parts of the system.
Curated OER
Machinery In Society
Students explore technology by completing a worksheet in class. For this common machinery lesson, students define the different designs that make simple machines work such as wheels, pulleys and gears. Students utilize verbs to describe...
Curated OER
Simple and Complex Machines Used In Agriculture
Students explore agriculture and the current technologies and research that continue to make Earth a viable planet. This four lessons unit introduce students to simple machines and the concepts of force and friction through a variety of...
Curated OER
Simple Machines
Fourth graders choose a simple machine and write about they way they believe it will work. Students experiment, write down procedures used and record observations. They will find a picture of the machine and add it to their report.
Curated OER
Getting Geared Up!
Students create their own Power Point presentation displaying clip art pictures of simple machines and telling how each machine makes tasks easier. They break into small groups and review information on simple machines from website and...
Curated OER
Wheel and Axle
Fifth graders construct a wheel and axle model using a Lego Dacta set. They read and discuss informational text from the book "It's Science! Machines We Use," and in small groups create a simple machine using Legos.
Curated OER
Gears and Proportions
Students explore gears. In this simple machines and ratio lesson, students view a video clip in which front and rear bicycle gears are explained. From a set of gear combinations and gear ratios, students identify high and low gear ratio...
Curated OER
Optical Illusion Machine
Students explore optical illusions. Using Legos, they construct and motorize a machine that has an axle that's geared up and geared down, complete a worksheet, and answer discussion questions.
Curated OER
The Physics of Tools
Students investigate the nature and work of simple tools and mechanics.
They explain how each simple machine can be used in real world applications. They explore levers, balance beams, windlasses, wedges, gears, ocarinas, harmonicas,...
Curated OER
Levers and Pulleys and Gears, Oh My!
Students explore the difference between compound and simple machines in this six lessons of this unit. The purpose and importance of a variety of types of simple machines and the effects of friction are investigated.
CPO Science
Physics Skill and Practice Worksheets
Stop wasting energy searching for physics resources, this comprehensive collection of worksheets has you covered. Starting with introductions to the scientific method, dimensional analysis, and graphing data, these skills practice...
Curated OER
Build a Snowplow
Students design and build a snowplow using LEGO materials. They compete in an Engineer's Challenge to clear a path through Styrofoam peanuts.
The Franklin Institute
Spotlighting Simple Machines
Simple machines such as inclined planes in wedges and screws are explained.
Technology Student
Technology Student: Gears and Pulleys
This site describes the basics of gears and pulleys, and their use in simple machines.
Science Buddies
Science Buddies: Gears Go Round!
Music boxes, bicycles, and clocks all have one thing in common: GEARS. You might say that gears make the world turn, since they are in so many mechanical instruments. How do they work and how do you know which gears to use? Find out in...
TeachEngineering
Teach Engineering: Gears: Lift It Up!
In this activity, students learn about the trade-off between speed and torque when designing gear ratios. The activity setup includes a LEGO pulley system with two independent gear sets and motors that spin two pulleys. Each pulley has...
PBS
Pbs Learning Media: Cyberchase: Bianca Gets in Gear
Bianca visits a bike shop and learns how bicycle gears work in this Cyberchase video segment. [3:26]
TeachEngineering
Teach Engineering: The Claw
Students learn about gear ratios and power by operating toy mechanical cranes of differing gear ratios. They attempt to pick up objects with various masses to witness how much power must be applied to the system to oppose the force of...
Other
D&t Online: Gears
This site illustrates how gears work and how they are used in simple machines.
TeachEngineering
Teach Engineering: Wide World of Gears
In an interactive and game-like manner, students learn about the mechanical advantage that is offered by gears. By virtue of the activity's mechatronics presentation, students learn to study a mechanical system as a dynamic system under...
PBS
The Math of Bicycles: Wheel Figure This Out (Grades 4 7)
Several good activities here. Look particularly at Wheel Figure It Out (which is the opening page) and Gearing Up. There are answers to the very good questions at the bottom of each.