Draft as of
July, 2009
FOSS Solids & Liquids Unit Overview

Unit Files

Solids & Liquids Unit Overview

ESSENTIAL QUESTIONS

How can we tell if something is a solid or liquid?
How are solids and liquids the same and different?
Why is it important to learn about solids and liquids?

ENDURING UNDERSTANDINGS

Students will begin to understand and appreciate that . . .


  • Solids and liquids have unique properties.
  • Materials can be mixed and separated given the appropriate tools.
  • An investigation should be done more than once to make sure data is accurate.
  • Scientists compare and contrast data with others to check for accuracy.
  • Our senses help us learn about the world around us. Our senses enable us to classify and compare objects.
  • Learning about matter will help us understand about our world.

SKILLS

Students will be able to . .


  • Sort solids in different ways.
  • Separate a mixture of solids by using screens.
  • Use the properties of solids to construct.
  • Use representational materials to separate particles based on size.
  • Describe properties of different liquids in bottles.
  • Compare properties of solid and liquid materials.
  • Compare the appearance and behavior of different liquids in containers.
  • Describe the properties of solid particles in closed bottles.
  • Describe what happens when solids are mixed with water.
  • Describe what happens when liquids and water are mixed.
  • Organize observations of mixtures.


KNOWLEDGE

Students will know . . .

Solids and liquids are states of matter.
• Solid materials have properties that
separate them from other states of
matter. Liquid materials have properties that
separate them from other states of matter.
• Solids can be sorted by their properties.
• Solid materials have distinct uses
based on their properties.
• Liquids pour and flow.
• Liquids take the shape of their
container.
• The surface of liquid is level with
respect to the ground.
• Solid materials come in all sizes and
shapes.

• Particles of solid materials can pour
like liquids, but maintain their shape.
• Solid materials can support denser
materials on their surface
• Some solids change when mixed with
water; others do not.
• Some solids dissolve in water; evaporation leaves the solid behind.
• Some liquids mix with water; other
liquids form a layer above or below water.
A scientist uses many tools when conducting an investigation.
• Water can be a solid or liquid.

Developing Vocabulary: Bend, Build, Color, Construct,
Corner, Curve, Cylinder, Engineer, Flat, Flexible,
Hard, Liquid, Solid, Observe, Opaque, Pointed, Property,
Rigid, Rough, Shape, Smooth, Soft, Sort, Straight, Texture,
Tower, Transparent, Bubbly, Colorless, Flow, Foamy, Level,
Pur, Shake, Surface, Tornado, Translucent, Viscous
Developing Vocabulary: Full, Funnel, Grain, Large, Medium,
Mixture, Particle, Pile, Powder, Same, Scoop, Screen, Separate,
Sieve, Sift, Size, Small, Static, Change, Crystal, Disappear,
Evaporate, Float, Layer, Sink, Swollen

ASSESSMENTAlong with on-going student observations and anecdotal notes, the following assessments can be used to form instruction and provide evidence of student understanding:
FOSS Student Sheets, FOSS Checklists, End of Module FOSS Assessment, Student Inquiry Notebook