Community Helper: Teacher

Today we are going to learn all about Teachers!

Lets Brainstorm First:

What is a teachers job?

Where do they work?

What equipment do they use?

Why are they called a community helper?

Simple Machine: Screw

Today we are going to be learning all about screws and how they work but lets do a quick review first!


What three simple machines have we talked about already? What is an example of each one?

What is a Force?

What is a Load?

A Screw

A screw is a long thin metal shaft with threads spiraling along its lengths. 

It makes rotational (spinning movement) into linear movement (backwards and forewords)

It is a type of fastener. 

The closer the threads, the stronger the hold and the more force it takes to put a screw into a material. 

Tell me:

What is a screw?

How does it work?

Is it a fastener and why?

What are three things screws are used for?

Community Helper: Mail Carrier

Today we are going to learn all about Mail Carriers!

Lets Brainstorm First:

What is a Mail Carriers job?

Where do they work?

What equipment do they use?

What information do we need to send a letter?
Hint! it is where you live and something you stick!

Lets learn about mail carriers :)

Simple Machines: Levers

Today we are going to be learning all about Levers and how they work but lets do a quick review first!


What is an Inclined Plane?

What is a Wheel and Axle?

What is a Force?

What is a Load?

What is a Material?

What is a Structure?

What is a Fastener?

Levers

Is a long bar that is balanced on something underneath. 

The Fulcrum is the part underneath. By pushing one part of the bar down the other goes up on the fulcrum. The closer the fulcrum is the easier it is to lift the object. 

Are used to push heavy loads up and down.

Other objects can be leavers to!

Lets Review!

What is a lever?

What is a fulcrum?

What happens when a lever is moved closer to the load (object) we are trying to lift?

What are some other levers?

Bonus: Video while we work.

Safety Poster

Today we are finishing up our unit on safety. You will each be making your very own poster to display around the school! I also will be marking this poster. 


First: Let's talk about some safety rules we remember. (think about fire safety, outdoor safety, medicine safety and personal safety)   

Here is what I am looking for in your posters

Safety Poster Design:

Slogan or Advice. 

Full Page of work.

Detail: Lots of colour and clear images.

Take your time and work independently.

Clear safety rule for others to follow.

Here Are Some Examples

We are going to find each element in them!

Community Helper- Police

Today we are going to learn all about Police Officers!

Lets Brainstorm First:

What is a Police Officers job?

Where do they work?

What equipment do they use?


Now let's watch and see of we were right!

Simple Machines: Wheels and Axles

Today we are going to learn all about the wheel and axle! But first a quick review:

What is a force?

What is a load?

What is an Inclined Plane?

What is another name for an inclined plane?

Wheels and Axles

When we want to move a heavy object we have to use a lot of force because the object sliding on the ground creates a lot of friction. 

Gravity also holds the object down to the earth. 

You know what a wheel is. An axle is the bar that goes through the middle of the wheel letting it spin. 

This gets the heavy object off the ground meaning less friction! so it is easier to move as less touches the ground. 

Lets Review

What is a wheel?

What is an axle?

What makes it hard to move big objects (loads)?

Why do wheels and axles make it easier to move loads?