Unit Outcomes:
Alberta Program of Studies
Grade 4 Science Levers and Wheels Curricular Outcomes
GLO:
Students will demonstrate a practical understanding of wheels, gears and levers by constructing devices in which energy is transferred to
produce motion.
SLO:
Students will:
Grade 4 Science Levers and Wheels Curricular Outcomes
GLO:
Students will demonstrate a practical understanding of wheels, gears and levers by constructing devices in which energy is transferred to
produce motion.
SLO:
Students will:
- Explain how rollers can be used to move an object, and demonstrate the use of rollers in a practical situation.
- Compare the wheel and the roller, and identify examples where each are used.
- Construct devices that use wheels and axles, and demonstrate and describe their use in:
- model vehicles
- pulley systems
- gear systems.
- model vehicles
- Construct and explain the operation of a drive system that uses one or more of the following:
- wheel-to-wheel contact
- a belt or elastic
- a chain
- cogs or gears.
- wheel-to-wheel contact
- Construct and explain the operation of a drive system that transfers motion from one shaft to a second shaft, where the second shaft is:
- parallel to the first
- at a 90° angle to the first.
Students who have achieved this expectation will be aware of changes in speed and direction that result from different ways of linking components. Introduction of gear ratios, however, is not recommended at this grade level. Students will have an opportunity to develop the concept of ratio as part of their junior high mathematics program.
- parallel to the first
- Demonstrate ways to use a lever that:
- applies a small force to create a large force
- applies a small movement to create a large movement.
- applies a small force to create a large force
- Predict how changes in the size of a lever or the position of the fulcrum will affect the forces and movements involved.
- Construct models of levers; and explain how levers are involved in such devices as: teeter- totters, scissors, pliers, pry bars, tongs, nutcrackers, fishing rods, wheelbarrows
References:
- Alberta Education. (1996). Science. In Program of Studies. Retrieved October 22, 2013, from http://education.alberta.ca/media/654825/elemsci.pdf
- Edmonton Public Schools. (1998). Grade 4: Wheels and Levers. Edmonton, Canada: Resource Development Services.
- Franklin Institute of Resources (n.d.). Simple Machines. In Resources for Science Learning. Retrieved October 25, 2013 from http://www.fi.edu/qa97/spotlight3/
- Gundrum, C. (2011). Simple Machines. In MIKIDS.COM. Retrieved October 25, 2013, from http://www.mikids.com/Smachines.htm
- Hubert, E., & Sylvester, D. (2004). Magnificent Machines. Canada: Rainbow Hori
- Macmillan. (n.d.). Unit 2: Simple Machines. In Caribbean Primary Science. Retrieved October 25, 2013, from http://www.macmillan-caribbean.com/uploads/d3ce90cf-d2e2-4202-ac31-46fc794acf70_BRIGHT_IDEAS_PB4%20Unit%202.pdf
- NeoK12. (2013). Simple Machines. In Educational Videos, Lessons and Games for K-12 School Kids. Retrieved October 25, 2013, from http://www.neok12.com/Simple-Machines.htm
- Swanson, A. (2011). Levers. In Basic Biomechanics. Retrieved October 24, 2013, from http://www.aaronswansonpt.com/basic-biomechanics-levers/
- Williams, J. (1991). Machines. East Sussex, England: Wayland Ltd.