There are 3 puzzles using the answers from 25 problems of counting by odd and even numbers. But there is a DIFFERENCE! The dots are number with the answers of the problems and are connected in the sequence of the problems.
This is a lesson from my book "Connect the Dots with a Difference -- Grade 1" which is a far better bargain at 24 puzzles for $10, covering all the addition skills.
Check it out at AH - HA LESSONS