This is a fun-filled activity for a group of kids. This can prove useful for teaching different time conversions. 

• All kids can be grouped into hours, minutes, and seconds teams.
• One representative from any team can be called to pick up any number card, and then the respective teams need to do the required conversions and report the answer, Quick responses from any team get rewarded with the score.
• For example, if a kid from the hours team picks up 7, then the minutes and seconds teams report the answer in their respective units.

7 x 60 = 420 minutes by minutes team

7 x 60 x 60 = 25, 200 seconds.

Complexity can be increased by calling kids from different teams together.

• Time Conversions