154
edits
Changes
Jump to navigation
Jump to search
mLine 1:
Line 1: − + − ===The Fraction abacus===Start Abacus [[File:Abacus-icon.png]], + − select the Fraction abacus.+ − − [[File:Functionabacus.jpg]] − − − Slide one of the 1/2 beads to represent 1/2 − − − − − Another way to represent 1/2 is to slide half of another string of fraction beads, for example slide 2 of the 1/4 beads. That is (2 x 1)/4 = 2/4 = 1/2 − − [[File:Abacus2of4.jpg]] − − − How many ways can you make 1/2, remember you can use 2 strings eg. 1/3 + 1/6 = 1/2 − − − If using just one string, only some of the strings of beads can be used to make 1/2. Which ones? Why? − − − How do you know if you have found all the solutions? − − − Find all the ways to make 1/3 and 2/3 − − − ===The Caacupé abacus=== − Load the Caacupé abacus − − It can represent negative whole numbers and fractions. 1/2 can be represented as 1 - 1/2 or 10 - 9 - 1/2 − − How many different ways can you represent 1/2 , 1/3, 2/3 − − How do you know when you have found them all? − − − see the [[Activities/Abacus/Worksheet/Answersheet | answersheet]]
Add header
== Fractions ==
== Abacus/Worksheet ==
Read at https://help.sugarlabs.org/abacus_worksheet.html
The source file has been moved to [https://github.com/godiard/help-activity/blob/master/source/abacus_worksheet.rst GitHub]
[[File:Abacus1of2.jpg]]