I used this worksheet with my younger students after eliciting and practicing the ordinal and cardinal numbers. I also worked with the time and played "Time battleships" game to review telling the time. In the game each person must try to find out where his or her partner's battleships are, using the day/time references. The game can be played with a grid of a minimun of 4 times 4. On one side of the grid stay the days of the week and on the other one different clocks with several times.