November 21st

Structure Stability

3 Little Pigs

Structure Characteristics

Tower of Pisa

London Bridge

Tower Bridge

Facts

Tower Bridge Facts

Eiffel Tower

Christ The Redeemer Statue

The Pyramids

Ancient Egyptian

Petronas Towers

HOMEWORK

Magic School Bus

Shapes and Strength 

Strong and Stable Structures

STRONG AND STABLE STRUCTURES

Animal Built Structures

Animal built structures look different from structures built by humans. Animals that build structure include mammals, bird, and insects. Animals build structures for 3 reasons:

1. To catch prey

2. To have a protected home

3. To communicate with other animals of the same species

Examples of animal built structures: Wasp Nests, Bird Nests, Beaver Dams, Spider Webs, etc.


Animal built structures are strong and stable. They use different materials from nature to make their structures. They use materials like mud, stone, branches, grass, dead wood, plant stems and leaves to make strong structures. They make their structures stable by using materials like spider silk, cocoon silk, or hard mud to keep their structure in one place. 

Animal built structures can impact the environment by:
1. Animal use resources provided by other livings things to help build their nests.
2. Animals could destroy other living things by taking resources to build structures. 
2. Beaver dams could flood the environments because the dams block off water supply.

 Human Built Structures

Man-made structures provide humans with - shelter, transportation and entertainment. They can bring money to the economy, for example, a shopping mall. 

 

Humans also use different materials to build structures. Some materials that humans use to build structures are wood, metals, bricks, concrete, glass and plastic.

Human built structures can impact the environment in different ways:
1. When a structure is built, the land that it is built on can be destroyed.
2. Animal homes may be destroyed.
3. Living organisms that live around the land can be harmed.
4. Trucks that transport materials can pollute the air.
5. Building the structure can also use a lot of energy from factories that can pollute the air. ​

Strength and Stability

We know that to make a structure more strong and stable we can...

• make the base wider
• have a strong and thick foundation
• use strong materials
• make the structure shorter
• ​make triangles in the frame

                                                     Forces Acting on Structures

We know that compression is a pushing force.
We know that tension is a pulling force.

Forces and Motion Project

Forces and Motion- Inventing A Toy

You will make a toy that uses at least ONE of the Forces and Motions or Simple Machines that we have learned about during our Science unit.

MY ADVICE: KEEP THE TOY SIMPLE!

Forces and Simple Machine List:

-Friction
-Push or Pull
-Magnetic
-Gravity
-Lever
-Pulley
-Wheel + Axle
-Screw

We will be having a "Tantalizing Toy Show" on  Tuesday November 13th, .

The students will present their "Sales Pitch" and toy to a member of the 3A class!!

Requirements:

• ONE TOY that uses at least ONE force mentioned above ---(can use more)
• Must have first two (2) pages completed from "Being a Toy Inventor " workbook
• Self Assessment of  Toy page from "Being a Toy Inventor " workbook
• ONE labeled drawing/diagram/sketch of toy and how it works- Label parts, simple machines, forces, movement, etc. 
• A copy of your "Sales Pitch"- It can be a brochure, a sign for your table, A poster, or just a verbal script. It must present a convincing argument and explain the form of energy used and how the toy works with scientific terms

Examples

October 30th-Part Two

Science- Simple Machines

INCLINED PLANE


LEVER

PULLEY

WHEEL AND AXLE

SCREW

WEDGE

October 30th

Angles

Lines

Sides and Corners

Lines of Symmetry

2-D Shapes

Polygons

Triangles

Quadrilaterals

October 28th

Magnet Lab

October 24th-Part Two

Science

Newton's First Law of Motion:

Newton's Second Law of Motion:

Newton's Third Law of Motion:

Review 1st, 2nd and 3rd Laws:

Friction Lab

The students through this science lab came to the understanding of how friction works, and will understand that different surfaces allow for different amounts of friction.

Students looked at ten different surfaces and predicted which surfaces will have the most and the least friction.

Push and Pull Lab

As the air rushes out of the balloon, it creates a forward motion called THRUST. Thrust is a pushing force created by energy. In the balloon experiment, our thrust comes from the energy of the balloon forcing the air out. The number of pumps of air we put into the balloon effects the speed and distance because of the added pushing force/thrust created by the air. 

Gravity Lab

It is because of gravity that objects fall to earth! We will try to trick gravity by using physics to makes water in a glass work against gravity.