Meat Margin Worksheet - DOC

							IDENTIFICATION
      INSTRUCTOR: Leah Hamilton
      UNIT TOPIC: Plant Structures and Plant Physiology
      LESSON TITLE: Identifying Plant Structures
      CLASS: HORT 362                     DATE BEST TAUGHT any
      TEKS: 119.51 3a _______________

OBJECTIVES (TSWBAT---The student will be able to… )
   Label major parts of stems, leaves, and roots on a worksheet with 100% accuracy.
   Identify types of leaf margins and leaf types on a worksheet with 100% accuracy.
   Create a workbook using leaves we collected from the school grounds with 100%
     participation.

TEACHING MATERIALS AND RESOURCES (What do you need to bring?)
    “Bank Robber” picture
    “Plant Morphology” worksheets
    “Plant Morphology” overhead
    “Plant Morphology Definition” worksheets
    “Leaf Margin and Leaf Type” handout
    Glue
    Stapler
    Markers

TEACHING PROCEDURES---Preparation, Presentation, Application, Evaluation

Preparation (Interest Approach/Motivator)
 Key Points                                                   Methods
 Motivation: Show class “Bank Robber” picture. Ask
 them to describe the robber’s appearance. Write              Teacher led discussion
 descriptive words on the board. How do you think
 horticulturalist describe plants when they can’t see the
 plant in person?
 Link: Yesterday we discussed plant functions, but there      Lecture
 are specific parts of the plants that help perform those
 functions.
 Overview: Today we’re going to list the major parts of       Lecture
 stems, leaves, and roots. We’ll also identify different
 leaf margins and leaf types. We’ll finish up by going
 outside to find leaves with various characteristics. We’ll
 use these leaves to make a workbook we can use in the
 future.

Presentation (The Meat!)
 Key Points                                                   Methods
 Pass out “Plant Morphology” worksheet and “Plant
 Morphology Definition” worksheet.                            Teacher Led Discussion
 Students should label the stem, leaf, and root parts
 while defining them on the definit ion worksheet.
 Students will read definitions aloud as they label.

 Pass out “Leaf Margin and Leaf Type” worksheet.
 Discuss the differences in the different leaf margins and
 leaf types with class.
 Entire (smooth edge), Undulate (slightly bumpy edge          Teacher Led Discussion
 with forked veins), Crenate (bumpier with parallel veins),
 Dentate (jagged edge), Serrate (very fine points, like a
 serrated knife), Lacerate, (even more jagged than
 dentate), Lobed (large bumps, like post oak).
 Palmate (leaves are arranged so they look like a palm)
 Odd Pinnately Compound (has a leaflet on the end of the
 rachis; and odd number of leaflets)
 Even Pinnately Compound (no leaflet on the end of the
 rachis; even number of leaflets)
 Bipinnately Compound (has compound leaf structure with
 compound leaves making up the leaflets)


Application (What will they do with what you taught?)
 Key Points                                                   Methods
 Take students out to explore school grounds (as a            Exploration
         group) to collect different leaves. They should
         find leaves with a variety of leaf margins and
         compound leaves.
 In the classroom they can glue their leaves to               Craft activity
         construction paper and label the type of leaf
         margin they have, whether they are simple or
         compound leaves and the various parts of the leaf
         (midrib, lateral veins, tip, lamina, etc). They
         should staple the pages together to form a
         workbook.

Evaluation/Summary (How do you know they learned it?)
 Key Points                                                   Methods
 What is an underdeveloped, unelongated stem? Bud
 What is the part of the stem between nodes? Internode        Review
 What is the most prominent central vein in a leaf? Midrib
 What is the leaf stalk which connects the blade to the
        stem? Petiole
 What is the growing point on the root and the stem
        referred to as? Meristem
 Name 3 types of leaf margins. Entire, Undulate, Crenate,
        Dentate, Serrate, Lacerate, Lobed
 Name 3 types of compound leaves. Palmately
        compound, odd pinnately compound, even
        pinnately compound, and bipinnately compound

 Today we learned the many ways we can describe plant         Summary
       structures and general appearance, especially
       that of leaves.

 Tomorrow we’ll identify more ways to identify plants.      Lead in to tomorrow
       We’ll distinguish between monocots and dicots.
REFERENCES:
      Horticulture: Science and Practice by Dr. David Reed
      General Horticulture Lab Manual, 2nd ed. by Dr. David Reed