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Leaf Science Gr2
 

Leaf Science Gr2

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    Leaf Science Gr2 Leaf Science Gr2 Presentation Transcript

    • Leaf Science! An Adventure & Exploration By Mr. Jarrett K-4 Computer Lab
    • Leaf Science!
      • Leaves, leaves – most are still in the trees! (But not for long…)
      • Leaves give us SHADE in the summer.
      • But that’s not WHY they exist!
    • Leaf Science!
      • Trees and plants need leaves to survive.
      • Trees and plants use leaves to make their own food.
      • When trees don’t need to make food any more, the leaves fall off.
    • Leaf Science!
      • Leaves use water from the roots and carbon dioxide from the air into food for the tree using sunlight and something called chlorophyll .
      • This process is called Photosynthesis .
    • Leaf Science!
      • Leaves are FOOD FACTORIES for trees and plants!
    • Leaf Science!
      • Leaves get their GREEN from something called Chlorophyll .
      • When the Chlorophyll is all used up, the leaf changes color, usually to red, yellow or orange.
    • Leaf Science!
      • Leaves come off the trees in the fall and need to be picked up.
      • Did you ever wonder why trees drop their leaves?
      • It’s because the trees are getting ready for winter – by closing their food factories!
    • Leaf Science!
      • Winter days are short and dry. As the days have less sunlight, plants know to stop making food.
      • The chlorophyll goes away and leaves change into the colors that were in the leaves all along.
    • Leaf Science!
      • Leaves have these main parts:
        • Petiole (stem)
        • Veins
        • Blade
      • Today we’re going to see leaves up CLOSE!
    • Leaf Science!
      • You and your partner will have a turn using the microscope.
      • You will also get a turn using the computer.
      • You will get to explore a leaf and take snapshots.
      • What will YOU find?!?
    • Leaf Science!
      • Do all the leaves look the same?
      • How are the leaves different?
      • Are there any features that all the leaves have in common?
      • How many 'points' do the leaves have?
      • Let’s find out!
      10x 60x 200x
    • Leaf Science! An Adventure & Exploration By Mr. Jarrett K-4 Computer Lab