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understanding structures and mechanisms

strong and stable structures


CURRICULUM EXPECTATIONS
www.edu.gov.on.ca/eng/curriculum/elementary/scientec18currb.pdf
OVERALL EXPECTATIONS
  1. assess the importance of form, function, strength, and stability in structures through time;
  2. investigate strong and stable structures to determine how their design and materials enable them to perform their load-bearing function;
  3. demonstrate an understanding of the concepts of structure, strength, and stability and the factors that affect them.

LEARNING TARGETS
learninggoalsgrade3.pptx
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VIRTUAL LEARNING COMMONS
vlc.ucdsb.ca/c.php?g=220374&p=1458569​

STUDY GUIDE
strong_and_stable_structures_study_guide.pdf
File Size: 70 kb
File Type: pdf
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KEY VOCABULARY/DEFINITIONS
A structure is something with a definite size, shape, purpose, and can hold a load.
A material is something that is used to make an object or structure. Most structures are made of many materials.
The strength of a structure is its ability to support a load. Humans have invented different ways of making materials and structures stronger (E.g., twisting/braiding, adding layers, folding, etc.)
The stability of a structure is its ability to balance and stay fixed in one spot.
Durable means a material or structure will not get damaged easily. 
Flexible means a material or structure can bend without breaking. 
Triangulation means using a triangle shape to make a structure stronger and more stable.
A force is a push or a pull. A force can affect the shape, balance, or position of a structure. 
Compression is a force where something is squished down or pushed together
Tension is a force where something is pulled apart or stretched. 
A strut is a rod or bar that helps a structure resist pressure. A tent pole is a strut.
A tie is a beam or wire that supports a structure with tension. A tent cord is a tie. 

www.tiktok.com/@comfort___zone/video/7019676856701963526?_d=secCgYIASAHKAESPgo8Cmi84NXUtmmMDTG6DUIvD7QVGVCaTDQmHO39Gy258M379mA%2FhMc6DzOSgBIibwDyWwzjYAtAFS%2FsPTIlGgA%3D&clips_cover_ab=v0&enable_clips=1&language=en&preview_pb=0&share_app_id=1233&share_item_id=7019676856701963526&share_link_id=A87FF790-F5A6-41CF-8268-9749005961CD&source=h5_m&timestamp=1634528128&tt_from=sms&u_code=0&utm_campaign=client_share&utm_medium=ios&utm_source=sms&_r=1​

​ADJECTIVES are describing words! They should be used to full express the characteristics of the materials we encounter in this unit. Remember to use all of your senses when experiencing a material. 
NATURAL VS. HUMAN MADE/BUILT STRUCTURES/MATERIALS
Natural materials/structures can be found in nature (e.g. a spider web)
Human-made/Built materials/structures: Natural material + tools + skill = human made
 
A person that designs structures is called an architect. 

Every structure has a size, shape, and purpose!

BUILD AN ATOM, ETC: phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html?download

STRENGTH IN ACTION
The strength of a structure is its ability to support a load. Humans have invented different ways of making materials and structures stronger (E.g., twisting/braiding, adding layers, folding, etc.)
A weapon made of toilet paper!
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​WHAT MAKES A BRIDGE STRONG?: 
Beam  vs. Truss (The use of triangles spreads out the weight of the load)  vs. Suspension
strong_and_stable_structures.pdf
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LEONARDO DA VINCI BRIDGE
​i.imgur.com/xipl7fC.gifv
​i.imgur.com/pn5QA0a.gifv
BRIDGE BUILDER GAME
​www.silvergames.com/en/bridge-builder
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The stability of a structure is its ability to balance and stay fixed in one spot
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  • Data/Probability
  • Algebra
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  • Coding
  • Financial Literacy
  • Health
  • Physical Education
  • The Playground Legends
  • The Playground Legends Store
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  • Materials, Objects and Everyday Structures
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  • Growth and Change in Animals
  • Properties of Liquids and Solids
  • Air and Water in the Environment
  • Movement
  • Soils in the Environment
  • Growth and Changes in Plants
  • Forces Causing Movement
  • Strong and Stable Structures
  • EQAO
  • Sample Units/Lessons
  • Indoor Recess
  • Educational Links