Select lessons from the list below. Most recent lesson is at top and oldest at the bottom
Lessons
Day 04: Pressures and Vacuums
Mar. 5
By the end of this lesson each student should be able to...
• Discuss relationship between pressure and vacuum
• Describe balanced forces when talking about pressure
• Describe pressure as a "pushing" quality - not a pulling quality
• Introduction to concept of vacuum (and use name now)
Bell Ringer:
pending
Lesson:
1) Make up simple lab in which students put card on baby food jar mouth (full of water) and invert to show card held up!!!
2) TOPS lab, Steam to Stream?
3) Distribute specs for Rube Goldberg project (due end of unit)
Assignment:
Students complete their "Ocean of Air" lab in class. Keep lab, do not hand in to Mr. Reimer. No homework.
DAY 03: Oceans of Air
Mar. 5
By the end of this lesson each student should be able to...
• Describe difference between force and pressure
• Discuss affect of air pressure on objects including concept of balanced forces
• Describe pressure as a "pushing" quality - not a pulling quality
• Introduction to concept of vacuum (though not named in class today)
Bell Ringer:
None today :(
Lesson:
1) Collect "Dentist Chair" specification sheet from students.
2) Return "Squeeze Play" lab to students. Comment on
• use of units
• writing pressure units as clear numerator and denominator (vertical) not horizontal for easier student work
• Reading question and identifying required terms in question (ex. #5 requires student to discuss thickness and pressure - without both of those ideas you cannot get credit for the answer.
• In #6, many students discussed "different forces" but the force was the same in all of these examples ...
• Students occasionally interchanged terms: pressure and force
3) Briefly overview "Ocean of Air" lab and distribute to students. Change instructions for #2 - instead of lift card on canning ring, lift on pair of pencils or pens.
4) In closing, discuss question #1, b. Make sure students leave with understanding of unbalanced force (pressure only on one surface) and balanced force (pressure pushing up and pushing down).
Assignment:
Students complete their "Ocean of Air" lab in class. Keep lab, do not hand in to Mr. Reimer. No homework.
DAY 02: Project Planning
Mar. 4
By the end of this lesson each student should be able to...
• Recall and be able to use equations for area of a circle and pressure.
• Produce force measurement in Newtons (N) when given mass in g or kg
• Determine pressure when provided with measurements for force and area
• Describe the relationship between:
- pressure and force when area stays the same or changes
- pressure and area when force stays the same or changes
- force and area when pressure stays the same or changes
Bell Ringer:
1) If you had 500 N force on an area of 10 cm^2, what would the pressure be?
2) How is pressure affected by increasing force while keeping area the same?
3) How is pressure affected by increasing area while keeping force the same?
Lesson:
1) Collect "Pressure Print" lab from students.
2) Share textbook with students (click here to download chapter in pdf format.)
3) Call attention to project at back of chapter (dentist chair).
4) Assign students to write "Specifications" for a dentist chair project. Students may want to see previous project specifications used for trebuchet project.
5) Student project specification should include the following:
a) Descriptive title
b) Statement of the goal or objective (what the project should accomplish)
c) Grading description (how will projects performance be graded or assessed? What scoring system will be used?)
d) List of permitted and/or prohibited materials
e) Size limitations if appropriate
f) Image of project (or facsimile)
g) Rubric for grading
h) Due date
i) any additional requirements (like drawing plans, building during class time or at home).
Assignment:
Students complete their "Project specifications" in hard copy and hand in to Mr. Reimer next class (Thursday morning).
DAY 01: Pressure Intro
Mar. 2
By the end of this lesson each student should be able to...
• Recall and be able to use equations for area of a circle and pressure.
• Produce force measurement given mass in g or kg
• Determine pressure when provided with measurements for force and area
• Describe the relationship between:
- pressure and force when area stays the same or changes
- pressure and area when force stays the same or changes
- force and area when pressure stays the same or changes
Bell Ringer:
None
Lesson:
1) Discuss test in class. Each student can see their own test. Discuss common errors by students.
2) Identify how to answer "calculation" questions: (a) write formula, (b) substitute values, (c) solve - show division step!, (d) produce answer, (e) in the written work every measurement should have units with it.
3) Introduce "Pressure" unit.
4) Show students difference between directly measured units (like time or length) and derived units, which require a mathematical operation on directly measure units (like density or pressure...)
5) Where pressure is P, then P=F/A
6) Teach students that force must be measured in newtons (N) and 1 N = 100g = 0.1 kg
7) Teach students that area must have squared units like cm^2 or m^2.
8) Provide students with a lump of clay and TOPS pressure lab 1: Squeeze Play. Student complete lab with partner and hand in before end of this period.
9) For question #3 (and #4 - 5) show calculation for Area (instead of using "Area Estimator" as per instructions) AND show pressure calculation
Assignment:
Students collect and take home TOPS pressure lab 2: Pressure Print. Complete lab at home and bring completed to next class. Don't forget to collect the graph paper too or download it here.