Fifteen pennies are placed in four envelopes and the envelopes are sealed. It is possible to pay someone any amount from 1p to 15p by giving them one or more envelopes. How were the pennies distributed between the envelopes?
Using small plastic bags and washers instead of envelopes and coins to do the "Coins in Envelopes" Maths Lesson Starter: https://t.co/KTLT95K9Gb The seethrough feature makes all the difference. #mathschat #mathchat #mathsCPDchat #eLearning #edchat #Binary pic.twitter.com/NpDCiQcv55
— Transum (@Transum) February 20, 2018
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:
This starter has scored a mean of 3.2 out of 5 based on 333 votes.
Previous Day  This starter is for 5 February  Next Day
This activity is suitable for students of mathematics all around the world. Use the button below to change the currency symbol used to make it more relevant to your students. You may wish to choose an unfamiliar currency to extend your students' experience. 
Extension: What if there were 31 pennies and 5 envelopes?
Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.
Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
Transum.org/go/?Start=February5
Here is the URL which will take them to a related student activity.
Do you need a visual aid to help you explain the binary system? Click below.
Are the coin values used today the most efficient choices? Listen to this excerpt from the 'No Such Thing As A Fish' podcast and investigate the claims made about 1p, 3p, 11p, and 37p coins.