Happy Halloween! Just a quick note – I have sent some candies home with students today. They are nut free and I have checked to ensure that dietary restrictions were met.
A few quick reminders:
· Tomorrow is a Day 5.
· Aftercare invoices for the month of September have come out and were due Tuesday, October 15th, 2019. Any questions can be directed to Ms. Chiappetta at echiappetta@stjudesacademy.com
· Field Trip permission forms were sent home for our trip to the Canadian Warplane Heritage Museum on November 21st. The cost is $27 – please return forms and money as soon as possible.
· Curling permission forms and waiver forms were sent home today and are due back Thursday, November 7th. This trip has no cost as it was already paid for in the athletic fees during registration.
Inquiry into Math – We started the day by taking up yesterday’s homework and reviewing the inquiry we did into all of our shapes.
After this, we started talking about variables. A variable is a letter (or symbol) that represents a quantity that can vary. For example, when we say ‘length times width’, the numbers aren’t always going to be the same. After this, we talked about area and perimeter. The perimeter of a shape is the measurement of the distance around that shape. The area is the space measure inside of a 2D shape. We measure perimeter in units as it is a linear measurement and area in units squared as it is a square measurement.
After this, we started to look at the ways we use variables in measurement formulas. We started by examining a square. A square is a shape with all four side measurements the same. We label this side with the variable ‘s’ for ‘side’. The perimeter is the distance around a shape. We write that P = s + s + s + s. Since this is repeated addition, we write P = 4 x s or P = 4s. For area, we write A = s x s or A = s2.
We use the same concept for rectangles, except rectangles use length (or base) and width (or height). For perimeter, we add all the sides together and write P = l + l + w + w, which can be written as P = 2l + 2w or P = 2(l + w). Note: You can use base and height in place of length and width. Either formula is correct. For area, we use A = l x w (or A = lw) or A = b x h (A = bh).
French – After this, we had French with Mme. Stella, which you can read about on her blog (https://stjudesfrench-stella.blogspot.com).
Gym – After recess and lunch, the students had gym with Mr. Orr, which you can read about on his blog (http://tysonorr.blogspot.com).
Inquiry into Air – We started with an investigation into air foils. Students conducted a mini experiment into air foils to determine why they are able to produce lift. After this, we began to study the shape of an air foil.
A scientist named Daniel Bernoulli (Bernoulli’s Principle) discovered that where there is faster moving air, the pressure will be lower. This air foil is the shape of a plane’s wing. The ‘hump’ moves toward the air, and the air resists movement (moves toward the plane). The air that goes above the wing reaches the other side as the air that goes below the wing. Here is what we uncovered:
· Above the wing, there is greater surface area.
· Above the wing, there is faster moving air (it has to move faster to reach the other end at the same time).
· Below the wing, there is lower surface area.
· Below the wing, there is slower moving air (it moves slower to reach the other end at the same time).
If we apply Bernoulli’s Principle, above the wing (where surface area is greater and air is faster), there is low pressure. That means that below the wing (where surface area is less and air is slower), there is higher pressure. Since the pressure is below the wing is greater than that above the wing, the plane is propelled upward. This creates lift. If the force of lift is greater than gravity, the plane is able to fly.
We ended by taking up yesterday’s investigations. We will have a test on Monday with one question – Use Bernoulli’s Principle to explain how a plane can fly.
Inquiry into Language – After recess and lunch, we listened to our Before Midnight poems – very spooky!
We ended the day by working on our book reports for City of Ember.
Homework:
- Pg. 96 #1-6
We do our best to complete work in class. In the event this is not possible, it will go home for homework.
As always, please feel free to email me with any questions.
Mr. Conte
