Mrs. McKenzie read this post by Ms. Cassidy in Canada about her class doing a mystery number skype, and thought that the students in B4 would enjoy doing it too.
Now we've had our first mystery number skype with Miss Revell and her Year 2 class of iKids, near Napier, New Zealand.
Beforehand, we brainstormed some useful questions, so we could eliminate lots of numbers from our choices.
These questions can all be answered with 'yes' or 'no' answers. They are called skinny questions!
First, our class had to work out their mystery number.
After lots of questions to eliminate the numbers, there was only one number left. It was 64!
That meant that the iKids won that round!
Then it was their turn to guess the number we had
chosen to start with, which was 67.
It was funny that both classes had chosen a number in the 60s!
For the next rounds we tallied the number of questions asked. Both classes solved their puzzles in only 6 questions.
Beforehand, we brainstormed some useful questions, so we could eliminate lots of numbers from our choices.
These questions can all be answered with 'yes' or 'no' answers. They are called skinny questions!
First, our class had to work out their mystery number.
After lots of questions to eliminate the numbers, there was only one number left. It was 64!
That meant that the iKids won that round!
Then it was their turn to guess the number we had
chosen to start with, which was 67.
It was funny that both classes had chosen a number in the 60s!
For the next rounds we tallied the number of questions asked. Both classes solved their puzzles in only 6 questions.
Now we are looking forward to more mystery number skypes with Mrs. Watson's class in Canada;
and Ms. Lirenman's class, also in Canada!
We have a mystery number for you to work out.
Ask us questions in the comments section.
Remember, questions can only be answered with 'yes' or 'no'!
