Transcript
Pestalozzi Gymnasium Unna, M. Schwarze
Gallery of hands-on activitiespart II
Measuring the height of a building with a stick
Inaccessible heights can be easily „measured“ by using a stick that is hold rectagular to the ground. The theorem of inter-secting lines can help for calculating the height.
Have a look at the task
Measuring heights with a Jacob’s staff
Inaccessible heights can also be „measured“ by using a tool like showed on the picture.
More information about the method and worksheet
Students can try it out hands-on. With three pointsthe equation of a quadratic function can be calculated. Does the graph of the calculated function fit to all points/parts of the hanging chain? Have a look at the task
Is this a parabola?
With Geoboards students of grade 5 can discover area, perimeter, reflections, rotations and the geometric concepts behind it.
Tasks and report from work in the classroom are coming soon. Here one website.
Active work with a Geoboard
Students may use these tangrams, construct und cut it out it on cardboard or foam rubber. The red shapes (as many as needed) can be used to form a heart, e.g. in more than one way (idea from Tatjana Vinokurova). Students like this. Creativity and exact construction if the pieces are needed.
A puzzle: Tangram-hearts
Easy paper folding
It is easy to fold a paper as shown in the short outline instruction. But it is a challenge for older students to proof that it is a parabola!
Right or wrong?
Is the circle line reguarly divided in 12 parts/sections? Justify or falsify it!Hint: isocelis triangles may help for argumentation.
Unforgettable
What is the relation between 4r² and peeling an apple?
We will contínue presenting hands-on activities that are easy to prepare, don’t last long and keep in students’ mind for a long time.
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