Sara+&+Kristy

Lesson Plan

Kristy and Sara

Science lesson #: Chpt 2 lsn 4

Lesson Title: What is air resistance?

Specific object: explain how air restistance affects falling objects

Vocabulary to teach: air resistance, terminal velocity, and vacuum

Anticipatory set (warm up): 1. start saying what the lesson will be about (have a or the title on the smart board) 2.then say that we will be doing an air resistance experiment later 3. now start playing a game (make a copy of the air resistance sheet, hand it to every pair of students) then say that we will put a question up or something to find in the paragraphs (they will have to read and search quickly with their partners) then what ever pair gets the most answers right then they will get a treat (candy or gum or something else) we will show the questions to be found and then whatever group raises their hands first and gets it right will get 2 peices of candy each. If the first group that raises their hand for the question gets it wrong, we will call on the next group that raised their hands. We will be writing down 5 groups of partners for each question and the first group to get it right will get the candy. If none of the 5 groups gets it right we will come back to it. But we won't be correcting until the end of the expirement.

Directions of Game 1. Get with your partner 2.find 2 desks to work in                        3.Have one partner get a take one(Air Resistance sheet) 4.Sara or I will put up a question for You and your partner to find the answer to                        5. We will take the names down of the first 5 groups of partners.The first set of partners( the first to have their hands up) will get a chance to answer the question first. If that group doesn't get the answer right then we will keep going down the list of partners until someone gets it right. 6.The first group that gets the correct answer will receive 1 or 2 peices of candy each.

Experiment: Class will do expirement while we do the expirement. We will read the directions. "Who would be crazy enough to leave a perfectly good airplane, accelerate for eleven seconds to reach a terminal velocity, where the pull of gravity equals wind resistance, of almost 200 kilometers per hour (125 miles per hour)?" As we learn in the article, many people do - and love it! At terminal velocity, of course, these jumpers open a parachute and float to the ground. Once the parachute is opened, velocity is reduced to only 6 meters per second, or about 22 kph -- slow enough to land safely. The total mass of Philippe + parachute is the same, but with the parachute spread above him rather then folded up tightly in his back pack, the air resistance is much greater.
 * ||  || In [|Skydiving] Philippe Theys says

credits to Phillippe I think ||  ||   || Here's a little experiment that demonstrates how this works. Materials The Experiment 1. Fold one piece of paper in half 2. Fold it in half again. The second fold should be at a 90° angle to the first fold. 3. Rotate the paper 90° and again fold it in half. 4. Continue to fold the paper in half until you can't make another fold. Tape it tightly together with cellophane tape so that it does not unfold. 5. Put a piece of cellophane tape on the second piece of paper. It should be the same length as the piece of tape you used on the first piece of paper. This tape doesn't hold anything. It's just there so that the two pieces of paper end up with exactly the same mass. 6. Loosely crumple the second piece of paper. What do you expect to happen when you drop both pieces of paper from the same height? Check our [|results].
 * Two pieces of paper, the same size
 * Cellophane tape

Step by step direct instruction: 1 start talking about air resistance 5min 2:17 2. Tell class that we are doing a warm up game ( warm up game is… have class do #1-9 and write it on their paper then save 4 correcting) 15 min 2:32 3.show the class experiment we are going to do 8min 2:40 5. correct the questions #1-9 10min 2:50