## Trigonometry

### Tracing shapes for kids ages 3-5 | part 1

Tracing shapes worksheet for preschool Kids will have fun learning their shapes as they trace the shape and color their very own shapes. This is a great activity for toddler, preschool, pre k, kindergarten, and first grade students. Tracing Shapes Worksheets for Preschool  (All Activity Papers) Home Page

### Puzzle of Crossing the Dark Bridge in 17 Minutes

How to cross the bridge in 17 minutes?  4 people who want to cross a bridge at night with a torch have to cross the bridge in the dark in 17 minutes -Since the bridge cannot carry more than two people, it means that the bridge can be crossed by one or two people. -To cross the bridge, a person must be holding the torch in his hand (meaning one person must return the torch so that the others can cross). -The first person A takes 1 minute to cross the bridge. -The second person B takes 2 minutes to cross the bridge. -The third person C takes 5 minutes to cross the bridge. -The fourth person D takes 10 minutes to cross the bridge. How can these people cross the bridge in 17 minutes? The solution: -Person A and Person B cross, so it takes 2 minutes. -Person B returns with the torch so it has taken 2 minutes. -He gives the torch to people C an