1. Holiday Math

2. Holiday Lights More lights require more energy. And, not all light strings are the same. Big (C-7) bulbs come in strings of 25. Mini-lights may have 35 to 200 bulbs per string. LED lights may have 35 to 100 lights per string. You can compare the amount of electricity that will be used by a string of each type of lights in an hour, by multiplying the number of watts per bulb by the number of bulbs per string:  A string of C-7 bulbs: 4 watts per bulb x 25 bulbs per string = 100 watts/hour  A string of mini-lights: 0.4 watts per bulb x 100 bulbs per string = 40 watts/hour  A string of LED lights: 0.04 watts per bulb x 100 bulbs per string = 4 watts/hour  Do the Calculations: The your house has 5 strings of lights across the gutters (you choose the type). Your family leaves them on from 5pm- 10pm. How much electricity is used in one day?  The lights are up from Dec 1st to Jan 1st. How much electricity has been used?

3. Answers  One day=  C7: 2500watts  Mini: 1000watts  LED: 100 watts  Dec-Jan=  C7: 77500 watts  Mini: 31000 watts  LED: 3100 watts List three strategies to conserve electricity during the holidays.

4. In December, there is a preference for evergreen trees that have a pyramidal shape.  Draw a pyramidal shape.  What 2 dimensional geometric figure does a pyramid resemble?  Name and Draw another geometric shape that is part of the December holiday symbolism.