Arithmetic with a mirror © Siemens Stiftung 2015 CC BY-SA 4.0 international

Arithmetic with a mirror

Interactive

Interactive arithmetic exercise:
Five coins are arranged on a table. How must the pocket mirror be placed to double the number of coins? (And four other exercises.)

Available in: English, Spanish (CREA), German
Type of media: Interactive (1.8 MByte)
Last update: 2021-06-25
License:

This medium is made available under a CC BY-SA 4.0 international license.

What does this mean?

How to reference this medium
Media package:
For interactive whiteboards (ES): Symmetry
Description:
Three possible positions for the pocket mirror are given in each case. Click the button with a check mark to show the correct mirror position. At the same time, a photo showing the correct answer is displayed.
Related media:
There are no other media directly related to this file.
Learning resource type:
Assignment; Worksheet (interactive)
Subjects:
Mathematics
Grade levels:
Grade 1 to 4
School types:
Elementary school
Keywords:
Axial symmetry; Basic arithmetic operation; Geometric figure; Geometry; Optics
Bibliography:
Siemens Stiftung Media Portal
Author:
MediaHouse GmbH
Rights holder:
© Siemens Stiftung 2015
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