Mystery Number Skype

We’ve been having weekly Skype calls with Ms Lirenman’s class in Surry, BC to play “Guess Our Mystery Number” and to improve our sense of numeracy. We’ve been slowly building up to larger numbers. This week we used the numbers up to forty. This is what it looked like during the call as Ms Lirenman’s class tried to guess our number (you can see it taped on the calendar in the top right of the picture).


And then we tried to guess their number. You can see that we were getting very close.


Mystery Number

Ms. Lirenman’s class in Surrey, British Columbia, is also learning about numbers up to twenty, so my class challenged hers to a mystery number Skype. We chose a number between one and twenty and they tried to guess what our number was by asking questions that could be answered with a “yes” or a “no”.

Their first question was, “Is it nine?” They were right!

Then we tried to guess their secret number. We had previously played the mystery number game in our class, so we knew some “fat” questions to ask such as “Does it have two digits?” but sometimes the temptation to ask “Is it four?” was just too much to resist. Finally, after lots of work eliminating numbers, we guessed it. We also let them have another turn because they were finished their turn so quickly the first time.

Mystery Number Skype

We had fun learning with your class, Ms. Lirenman! We hope we can do it again soon.