To the right of the wall are boxes which can be hidden, the value of each box is fraction of the wall that has been turned on. When you launch this interactive teaching program the initial wall is a mixed one showing 3 distinct fraction families.
Change the wall by using the mode control. The others split the wall along 2s, 3s or 5s. Use the display type control to display decimals rounded to 2dp , percentages rounded to 1dp , fractions or none.
Normally when you click a brick to turn it on or off, only that brick is affected. However if you turn on the equivalent fraction function by clicking the 'Eq' toggle button. Now when a brick is clicked the other layers will turn on bricks if they can match an equivalent fraction. Note, this is not always possible, in fact if you select the primes wall it is never possible to show an equivalent fraction. In this case all the other layers have bricks turned off. Also known as 'the lowest common multiple' or 'smallest common multiple' is crucial when adding, subtracting or comparing fractions.
This button will calculate the LCM based on the rows that have active bricks. Main menu Search. Hide Menu. You may also like Chocolate There are three tables in a room with blocks of chocolate on each. Four Triangles Puzzle Cut four triangles from a square as shown in the picture.
Cut it Out Can you dissect an equilateral triangle into 6 smaller ones? Can you find any "rules" for working out equivalent fractions? You might find it helpful to print off a picture of the fraction wall. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
0コメント