Can You Identify Arthropods?

Key Question: Through the observation process can you identify and classify arthropods?
Time Frame: One Hour
Grade: Grade 3
Scientific Process: Sorting and Classifying
Recording
Applying and Generalizing
Objective The student wil be able to sort and classify the four Arthropod classes.

TEKS:
Science TEKS Grade 3 (2) Scientific Inquiry: Field and Laboratory
b. collect information: observe and measure
c. analyze and interpret information to construct explanations from direct and indirect evidence.

Science TEKS Grade 3 Systems (10) Likeness between Offspring and Parents Inherited from Parents
b. identify inherited traits in animals

Math TEKS Grade 3 (14) Displaying and Interpreting Data

collect, organize, record and display data in picture and bar graphs; interpret information from graphs.

Materials:

Poster Board (one per group)
Examples of each Arthropod class (One example from each class/group)
Markers
Ruler
Construction paper
Scissors
Glue
Pictures of Arthropods cut into puzzle pieces
Index cards
Overhead projector

Background Information:

Arthropod Characteristics

  1. Segmented bodies
  2. Segmented legs
  3. Exoskeleton
Classes of Arthropods
  1. Insecta-insects
  2. Arachnids-spiders, mites, ticks
  3. Diplopoda-millipedes
  4. Chilopoda-centipedes

Engagement:
Students are given puzzle pieces of one Arthropod example. Place the students in groups of five and give each group a Arthropod puzzle. The challenge for the group is to put their puzzle together, glue it on a piece of construction paper and label the ir puzzle. This is a silent activity and each group is to display their picture on the board when completed.

Explore:
Students remain in their groups and are given examples of each class of Arthropod. Through observation and group discussion students will list and illustrate on the poster board Differences and Similarities of each of the Arthropod classes.

Explanation:
Each group wil share their findings with the class. The class will look for common findings among the groups and the teacher will list them on the overhead. The teacher will present the formal Arthropod classes and the students will connect this to th eir findings.

Elaboration:
The student will draw two examples of each of the Arthropod classes on index cards. In pairs, students will play the game "Go Fish", using their index cards.


Evaluation: Scoresheet

GROUP SKILLS/COOPERATION

Points Characteristics
0 Student behavior interferes with group process
0 Student refuses to cooperate or make contributions to the group
1 Student cooperates, but does not contribute to the group
2 Student cooperates and makes at least one measurable contribution to the group
3 Student consistently cooperates and makes several significant contributions to the group

PARTICIPATING

Points Characteristics
0 Does not participate
1 Participates inappropriately for the assigned task
2 Participates appropriately for the assigned task

OBSERVING

Points Characteristics
0 Fails to make observations
1 Makes one observation
2 Makes two or more observations
3 Makes two or more observations and supports with evidence

Connections:
Math - Picture Graphs demonstrating frequency of group results


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