Part 5: Measure the mass of the following items using the units shown: 1. Pair of scissors: 2. Calculator: 3. Cell phone: 4. What is the best unit for weighing all these items? 5. Why do you think that is the best unit to use?

What is an unprotected railroad crossing? a) A railroad crossing without a fence surrounding it b) A railroad crossing without flashing lights or barricades c) A railroad crossing with flashing lights or barricades d) Stopping on top of the railroad tracks

1. Can you think of some ways that you use energy everyday? 2. Can you think of a time when you've had both potential and kinetic energy? How could you have more of each type? 3. Are there any words you know that sound similar to any of the vocabulary in the reading? How do the meanings of those words compare to these?

Quale unità di misura useresti per misurare l'altezza di una lampada: pollici o piedi?

What household items weigh 100 grams?

¿Cuántas pulgadas hay en un pie?