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wheels and axles and inclined planes
website: www.knexeducation.co.uk
Lesson 7: The Hand Drill
* An inclined plane.
* Ask the children to describe the shape made by the
marked edge.
* A spiral.
* What other familiar objects do they know that have
this shape and what are they used for?
Teacher’s Note’s:
Make a list on the board of the
objects and their function. For
example: Screws, nuts and bolts,
hand drill bits, cork screws, screw
tops for bottles and jars, water tap,
bench vice.
Whole class
 • Demonstratehowtosafelyusethetypeofhanddrillthe
children may use in Design and Technology lessons.
 • Askifitwouldbeeasytopushanailorscrewordrillbit
into a piece of wood by hand? Why or why not?
 • Askthechildrentoobservehowthehanddrillworks.
* What type(s) of movement does the handle make?
* What type(s) of movement does the drill bit make?
* Circular or rotary motion.
* The drill bit rotates and cuts
vertically down through the
wood. The movement through
the wood is linear motion.
* How are the wood shavings removed from the
hole by the drill?
* They travel up the spiral groove
in the drill.
3. Measure and record the length of the marked edge.
* Ask what the shape of the right angle
triangle resembles.
4. Place the paper on the desktop so that the
marked edge is face down.
5. Place the pencil or dowelling along the short vertical
edge and roll the paper around it.
6. Measure the length of the pencil/dowelling covered
by paper.
7. Compare the length of the pencil/dowelling covered by
paper with the length of the marked edge of the paper.
Education
®
42


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