class viii is…. pressing on pressure - nirmal bhartia … viii is…. pressing on pressure....

Class VIII is….

Pressing on Pressure

Driving Question

What are the different

types of pressures experienced by an

individual in his life ?

End Product

To create a model displaying any application of

the concept of pressure.

Essential Learning Levels

The students will be able to:

• Explain the concept of pressure and its

dependence on force and area.

• Define fluid pressure and state its

properties.

• Explain how pressure is measured.

• Relate and apply their knowledge about

pressure and its effects in real life

situations.

Beginning to get under pressure…

The Process

A robust discussion and observation of slice-of-life examples such

as aerated drinks and blood pressure led to the children

classifying pressure into different categories and making a note of

the same in their organisers.

Pressure to reach conclusions…

Types of Pressure

‘Relative pressure’

Deducing the relationship between Force, Area

and Pressure.

Am I a ‘Heavy weight’ pressure …

Yes- Pressure is exerted by the body.

Calculating the amount of pressure exerted by our body when we are standing on both feet.

Students watched the movie

‘Gravity’ to gain an understanding

of what life would be like if there

was no atmospheric Pressure.

‘All Afloat’-The ‘No Gravity’ world’

They also learnt

“Never give up: There is

always another plan or

another idea that can be

improvised. If you think

you’re out of options, think

harder.”

Experiment with Pressure Which way does water run ?

The students conducted

experiments in the lab

and, recorded their

conclusions .

Dr. Ritika, spoke about the various kinds of pressures

experienced by our body and the instruments used to

measure them.

Doctor Pressure

Pressure… Time to reason

The students solved application based numericals on ‘Pressure’.

Pressure to find the right answer…

The students shared their understanding that ‘Pressure’ is not just a scientific phenomena but also exists in different forms in day to day life. They communicated this to their peers in class by using different forms of expression such as poetry and painting.

Poetic Touch

Creative Pressure …

Assessment and Observations

Students attempted 1. Written assignments :The relation between Force, Area and Pressure ; Fluid

Pressure, Atmospheric Pressure, Blood Pressure, and application based Questions and Numericals based on the calculation of pressure exerted by the body.

2. Lab Activities:Calculation of Pressure exerted as a result of body weight; Fluid Pressure as a result of depth, Verifying the properties of Air Pressure , Calculation of Blood Pressure with the Device meant for it and Atmospheric Pressure.

3. Group Discussion on different types of pressure experienced by the Human Body, Relation between force, area and pressure, Life without gravity, Diseases related to Blood pressure – cause and effects, Pressure exerted by liquids 4. Oral Presentation on - The models displaying the concepts of Pressure; Expression of the term ‘Pressure’ using creative forms such as poetry or art work and life without ‘Gravity’. 5. Peer Review on the models presented by their peers.

Hydraulic Lift Air Powered Car

Letting out Pressure … The children created a model that displayed the

application of pressure.

Anemometer Air pressure

Vacuum Cleaner