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Grade 7 Science

 
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Grade 7 Science

Recommended Grade Level: 7

This course introduces the students to life sciences, cells, genetics, ecology, key cycles of life, plant & animal characteristics, the human body. Students learn about the weather patterns and how they affect earth.

 

Prerequisites:

 

Lab resources: If the student will be completing the science labs for this Unit, they will need the following items:

Unit 1 Lab: Plastic Sandwich Bag vs. Pencil Experiment

  • three identical plastic sandwich bags
  • sharpened pencil
  • enough water to fill a plastic sandwich bag

Unit 1 Lab: Growing Insects

  • 2 sponge toy insects or another type of animal (often come in capsules and then grow in water)
  • triple beam balance
  • 100 ml graduated cylinder
  • 2 large bowls
  • 1 beaker that can be heated
  • metric ruler
  • thermometer
  • paper towel
  • tap water
  • timer
  • hot plate
  • tongs

Unit 2 Lab: Letter “e”

  • compound microscope
  • microscope slide
  • pair of scissors
  • clear tape or slide cover slip
  • page from a newspaper
  • light source, if needed

Unit 2 Lab: Cheek Cell

  • compound microscope
  • microscope slide
  • slide cover slip
  • medicine dropper
  • iodine
  • toothpick
  • cells from the inside of your cheek

Unit 3 Lab: Generations of Traits

  • 6 cups
  • 4 pompoms of each of the following colors:
    • red
    • pink
    • green
    • light green
    • blue
    • light blue
    • purple
    • light purple
  • a crayon or marker to match each color of pompom
  • permanent marker

Unit 3 Lab: Natural Selection

  • 1 assistant
  • hole punch
  • 2 sheets of black paper
  • 2 sheets of white paper
  • forceps

Unit 3 Lab: Predator and Prey Adaptations

  • markers or colored pencils

Unit 4 Lab: Physical Properties of Matter

  • small cube or block of wood that can fit in a graduated cylinder
  • metric ruler with centimeters
  • calculator
  • water
  • graduated cylinder (500 ml or 1000 ml)
  • string
  • triple beam balance
  • 3 beakers labeled A, B, and C with the range of 250–1000 ml (Beaker B needs to be filled and left
    out ahead of time to make the water room temperature)
  • hot plate or Bunsen burner
  • ring stand with bracket to hold a thermometer
  • thermometer with temperature in Celsius
  • crushed ice (enough to fill one beaker)
  • distilled water (enough to fill one beaker three different times)

Unit 4 Lab: Marshmallow Catapults

  • mousetrap
  • rubber band
  • 2 rectangular erasers
  • duct tape
  • 2 popsicle sticks
  • plastic spoon
  • marshmallows in two different sizes
  • meter stick

Unit 5 Lab: Cloud Formation

  • 2-liter plastic bottle
  • warm water
  • matches

Unit 6 Lab: Xylem

  • 2 glass containers
  • celery stalks (with leaves; about 10 stalks for every 25 students)
  • clear nail polish
  • blue food coloring
  • glass tube (hollow; the smaller the diameter, the better)
  • metric ruler
  • leaves from plants
  • microscope
  • transparent tape
  • microscope slide
  • microscope cover slip

Unit 6 Lab: Seed Germination

  • 5 plastic zip-top bags
  • 5 paper towels
  • distilled water
  • graduated cylinder
  • seeds of 5 different plants, 10 seeds of each plant (good choices are beans, corn, green peas,
  • lettuce, radishes, or squash)
  • permanent marker

Unit 6 Lab: Flower Model

  • colored paper or cardstock
  • pipe cleaners
  • straws
  • wire
  • sponges
  • plastic bottles and bottle caps
  • cotton swabs
  • paper plates
  • disposable cups
  • string or yarn
  • beads or buttons
  • scissors
  • glue
  • tape
  • permanent marker for labeling

Unit 8 Lab: Crustaceans

  • Daphnia
  • transfer pipette
  • clean depression slide
  • compound microscope
  • small container
  • 1% ethanol in a dropper bottle
  • water
  • eyedropper
  • timer or clock with a second hand

Unit 9 Lab: Respiration

  • 2 feet of aquarium tubing
  • lime powder
  • masking tape
  • matches
  • measuring cup
  • plastic dish pan
  • pen
  • straw
  • water

Unit 9 Lab: Nervous System

  • meter stick
  • small book
  • blindfold
  • two classmates

Unit 10 Lab: Biodiversity

  • 2 water samples from two different locations (local ponds, streams, lakes,
    or rivers)
  • 3 glass culture dishes or depression slides
  • hydra population in hydra medium
  • brine shrimp or Daphnia (If brine shrimp are fed to the hydra, make sure the salt water is rinsed off;
  • otherwise, you will kill the hydra)
  • distilled water
  • 4–6 droppers or pipettes
  • microscope
  • paper or tape for labeling

Unit 10 Lab: Drinking Water and the Sun

  • clean drinking glass
  • plastic wrap or any clear plastic food covering
  • 1 teaspoon curry
  • ½ cup drinking water
  • 1 teaspoon food dye
  • 1 teaspoon garlic
  • large, clear bowl
  • spoon for mixing
  • pebble
  • 1 teaspoon pepper
  • pH paper
  • 1 teaspoon salt
  • ½ cup vinegar

 

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