Some coins were arranged in a row.
Half of them were tails up.
Two of the coins are turned over and now one third of them are tails up.
How many coins were in the row?
Teacher: Here is a visual aid to use if required. Coins can be dragged and, to turn them over, doubleclick.
Have a guess!
Topics: Starter  Fractions  Problem Solving  Puzzles
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Previous Day  This starter is for 16 March  Next Day
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=March16 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a related student activity.
Do you think a fraction wall might help with this puzzle?