Do Now Monday, August 22, 2016

Transcription

1 Do Now Monday, August 22, 2016 How do we convert between SI units? Write your answer using complete sentences. 3.5 minutes Do Now Check

2 By the end of the day today, IWBAT Differentiate between Pure & Applied Science; Constant variable and Control Variables. Why it matters in LIFE: Learning the SI units are crucial to communicating with scientists in other countries! Why it matters in THIS CLASS: You will conduct labs all year long that will require mastery of these concepts! Tested material.

3 Monday, 08/22/16 P.S.1; P.S. 2-11: Distinguish between scientific hypotheses and scientific theories. Essential Questions: How do we convert between SI units? By the end of today, IWBAT Explain the Difference between constant and control Topic: Scientific Methods (II)

4 Metric Mania A Stand Alone Lesson on Metric Prefixes

5 I m only 5 millimeters long! 5 mm Remember: Millimeters are tiny, and you measure small things with them.

6 I m only 5 centimeters, but I m getting bigger! 5 cm Remember: Centimeters are small, and you measure small things with them.

7 What unit would you use to measure the height of this skyscraper? Choose one: Millimeter (mm) Centimeter (cm) Meter (m) Kilometer (km)

8 449 m Excellent! The height of most structures are measured in meters!

9 Traverse City 240 km MSU Getting close! But most structures are measured with units that are smaller than a kilometer.

10 449 m BUT WAIT!!! What if you wanted to know how many centimeters tall a skyscraper was How would you convert from km to cm???

11 First, let me ask you a question Look at the end of this meter stick. How many millimeters are in a centimeter? Choose one 1mm = 1cm 5 mm = 1cm 10 mm = 1cm 100 mm = 1cm

12 A millimeter is not equal to a centimeter. Try looking at the meter stick again and see if you can count how many millimeter hash-marks there are in a centimeter

13 Keep counting There are more than 5 millimeter hash-marks in 1 centimeter.

14 CORRECT!!! As you can see, there are 10 little millimeter hash-marks within one centimeter. So 10 mm = 1 cm!

15 Incorrect. Go back to the meter stick and try counting how many millimeter hash-marks there are in 1 centimeter.

16 A meter stick is exactly one meter in length. How many centimeters do you think are on a meter stick? Hint: How many cents are in one dollar?.?.? Choose one: 10 cm = 1m 100 cm = 1m 1000 cm = 1m

17 10 cm = 1m is incorrect. Remember that you learned a meter is about three feet in length. If 10 cm = 1m then a meter would only be about 2 mice long! 5 cm

18 Incorrect Think about the HINT: There are one hundred cents in a dollar so how many centimeters do you think are in a meter stick?

19 Correct! There are 100 centimeters in 1 meter. Just like there are 100 cents in 1 dollar.

20 But how can we easily convert from one metric unit to another metric unit with out always having to count pennies or hash marks?

21 Tell me If all the prefixes in the metric system were arranged on a staircase, would it help you solve this dilemma? meter gram liter etc

22 These are the abbreviations for the metric units of length.

23 You are here meter gram liter etc If you were on this staircase at a meter and you wanted to go to centimeters, how many steps would you have to take? Choose one: 2 steps to the right 2 steps to the left

24 This is a hectometer Incorrect. By stepping to the left you have made your way to a hectometer. You want to go to a centimeter. Go back and try again.

25 This is a centimeter Great Job! You moved two spots to the right and arrived at the centimeter step.

26 Let s try another If you want to move from a millimeter to a kilometer how many steps would you have to take? Choose one Two spots left Two spots right Six spots left Six spots right

27 You have taken two steps to the left and only made it to a decimeter. You need continue to step to the top of the staircase. Go back and try again

28 If you step to the right you will be going the wrong direction. Remember, you want to go up to the kilometer. Go back and try again

29 Excellent Work! You took six steps to the left and made it to a kilometer! You have just learned how to use the metric staircase to convert from one metric unit to another. Click the next button to see what I mean.

30 With regards to converting from one metric unit to another it is simply a case of moving the decimal The hard question is: In which direction, and how many spaces? But guess what? You have already figured that out!

31 If I asked you to convert from mm km, you could use the metric staircase to see what direction and for how many spaces you need to move the decimal. So, how many km is mm? Choose one km km km

32 km is incorrect, you only moved five spaces to the left. To go from millimeters to kilometers you have to move six spaces to the left.

33 km is Correct! You moved the decimal six spaces to the left. You move the decimal in the number the same direction and number of spaces you would move on the staircase to get from one unit to the next km

34 km is incorrect, you moved one space to the right. To go from millimeters to kilometers you have to move six spaces to the left. Try again.

35 Let s try another How many centimeters are in km? Choose one cm cm cm

36 cm is incorrect. You only moved the decimal to the right four spaces. This would give you and answer of decimeters. Remember, you want to go to centimeters. Try again.

37 cm is incorrect. You only moved the decimal to the right one space. This would give you and answer of hectometers. Remember, you want to go to centimeters. Try again.

38 cm is CORRECT! You moved the decimal to the right five spaces. This would give you and answer of centimeters.

39 Great Work!!! You now know how to use the metric staircase to convert from one metric unit to another metric unit! You worked hard and learned well. Now go off into the world and find some magnificent metric measurements to convert!