Sabrina Perrotta

Prior Knowledge Investigation

 

“ExCELL with Organelles” Plan

 

Purpose/Rationale: The purpose of this lesson is for students to investigate cell parts and cell functions following the 5-E Learning Model. By participating in discrepant events, students will learn the two types of eukaryotic cells and main cellular structures and functions.

 

SOL’s:

LS.2: The student will investigate and understand that all living things are composed of cells. Key concepts include the following: cell structure and organelles (cell membrane, cell wall, cytoplasm, vacuole, mitochondria, endoplasmic reticulum, nucleus, and chloroplast), and similarities and differences between plant and animal cells.

 

NSES’s:

Teaching Standard A: Teachers of science plan an inquiry-based science program for their students. By doing this, teachers select teaching and assessment strategies that support the development of student understanding and nurture a community of science learners.

Teaching Standard B: Teachers of science guide and facilitate learning. In doing this, teachers focus and support inquiries while interacting with students.

Teaching Standard E: Teachers of science develop communities of science learners that reflect the intellectual rigor of scientific inquiry and the attitudes and social values conducive to science learning. In doing this, teachers nurture collaboration among students and model and emphasize the skills, attitudes, and values of scientific quality.

Life Science Content Standard C: As a result of their activities in grades 5-8, all students should develop understanding of the following: structure and function in living systems (all organisms are composed of cells, specialized cells perform specialized functions in multicellular organisms, and cells carry on the many functions needed to sustain life).

 

Materials and Resources:

2 Poster boards with drawn on plant and animal cell

Balloons

Construction Paper

Yarn

Scissors

Activity sheet

Nurf Balls

Writing utensils

Colored markers/Sharpies

Crown and Sash

Masking Tape

Jumping Rope

Plastic bin container

 

Hole Puncher

Microscope

Euglena Samples

Slides and Cover Slips

Eye Dropper

 

 

 

 

 

 

Safety:

While performing “ExCELL with Organelles” activity, special care needs are to be accommodated for students who need aides.

 

Procedures: (conducted for anywhere between 1 to 2, 45-minute sessions or one block)

Posters of animal and plant cell are to be displayed at start of lesson so visual learners are accommodated for.

  1. Have students complete “What I know Worksheet” in order to familiarize oneself with students prior knowledge on cell structures and functions. (5 minutes)
  2. Students will be asked the main parts and functions of cells. Using displayed poster board cells, students are asked the difference between animal and plant cells and asked to fill in “Compare and Contrast graphic organizer.” (5 minutes)

 

Engage/Explore: (15 to 20 minutes)

 

(“ExCELL with Organelles” modified from a lesson plan by Ms. Dayna Wilhelm on 6 October 2005)

Hanging labels will be made for each student acting out cellular organelle. The organelles of a plant cell will be acted out as follows:

 

 

 

Explain: (7 to 8 minutes)

 

While students are cleaning up activity have cell functions on pieces of paper taped to board.

 

Those cell parts not acted out by students are displayed by the teacher and students are asked which organelle goes with what function. Each student who acted out a cell part is asked up come up and tape their cell part to the cell function. While students are matching cell part and function on board, students are asked to fill in “Structure and Function Chart.”

 

(student will be asked to fill out “What I Now Know Worksheet” to gauge student engagement and retention of information)

 

Elaborate: (8 to 10 minutes)

 

Now that students have knowledge of two cell types, similarities and differences, and cell organelle and function, students will be shown slides of Euglena specimens and open discussion of which cell type they are viewing. Because this common pond species is both plant and animal students will be asked to use their prior knowledge and expand on what they are viewing.

(possible discussion questions: what color do you see in the organisms? What do you think causes this color? Students will usually assume they are looking at plant cells because they are used to chloroplast being the green organelles. Once teacher feels students are convinced they are looking at plant cells, ask questions to support the idea they are looking at animal cells can plant cells move? How are they moving? Can you see any organelles? How would you classify Euglena.)

*this can lead to classification unit, or just be used as a way of elaborating on what they have learned in this lesson.

 

Evaluate (assessment):

Students will provide the following evidence for understanding cell structure and function:

 

Performance Criteria

Evidence

Points or Rating*

Students will understand the differences between the two cell types

Completion of compare and contrast graphic organizer

 

Students will understand the cell organelle and function.

Demonstration of cell parts and completion of structure and function chart.

 

 

*2= completes activity and explanation without mistakes

1= completes activity but offers incomplete explanation

0= does not complete activity or explanation

Name:

 

“What I Know”

1. What is a cell?

 

 

 

 

2. What are the 2 kinds of eukaryotic cells?

 

 

 

3. What are the major differences between the two types of cells listed in #2?

 

 

 

 

 

 

Match the following cell organelle with cell structure.

1. Cell Membrane                                           A. Controls the cell

2. Cell Wall                                                     B. Makes proteins

3. Nucleus                                                       C. Gives shape and support to plant cells

4. Cytoplasm                                                  D. Provides energy

5. Mitochondria                                              E. Controls what enters and exits the cell

6. Ribosomes                                                  F. Contains cell organelles

7. Endoplasmic Reticulum                              G. Has chlorophyll to help cells trap light to make food

8. Golgi Bodies                                               H. Breaks down and recycle cell waste

9. Lysosome                                                   I. Controls what comes in/out of nucleus

10.Vacuole                                                      J. Tube network that transports cell substance

11.Chloroplast                                                K. Stores protein

12. Nuclear Membrane                                   L. Stores food and water

 

 

 

 

 

 

 

 

 

 

 

 

Name:

 

“What I Now Know”

1. What is a cell?

 

 

 

 

2. What are the 2 kinds of eukaryotic cells?

 

 

 

3. What are the major differences between the two type of cells listed in #2?

 

 

 

 

 

 

Match the following cell organelle with cell structure.

1. Cell Membrane                                           A. Controls the cell

2. Cell Wall                                                     B. Makes proteins

3. Nucleus                                                       C. Gives shape and support to plant cells

4. Cytoplasm                                                  D. Provides energy

5. Mitochondria                                              E. Controls what enters and exits the cell

6. Ribosomes                                                  F. Contains cell organelles

7. Endoplasmic Reticulum                              G. Has chlorophyll to help cells trap energy from light to make food

8. Golgi Bodies                                               H. Breaks down and recycle cell waste

9. Lysosome                                                   I. Controls what comes in/out of nucleus

10.Vacuole                                                      J. Tube network that transports cell substance

11.Chloroplast                                                K. Stores protein

12. Nuclear Membrane                                   L. Stores food and water

 

 

 

 

 

 

 

 

 

 

 

 

Structure and Functions

 

Cell Structure

Cell Function

What we did

Cell Membrane

 

 

Controls what enters and exits the cell and protects and supports cell

Jump rope

Cell Wall

Stiff/rigid structure that gives plant cells shape and support

desks

Nucleus

Controls the cell

Queen with crown

Cytoplasm

Contains cell organelles

Jelly like

Mitchondria

Provides energy to the cell

Jumping jacks

Ribosomes

Makes proteins

Protein balloons started here

Endoplasmic Reticulum

Tube network that acts as pathways for proteins

Protein balloon pass from ribosome, hot potatoe to golgi bodies

Golgi Bodies

Stores and sorts proteins

Receive protein balloons from E.R. and sort

Lysosomes

Break down and recycle cell waste

Trash collector

Vacuole

Stores food and water

Blue balloon with water and food drawn on

Chloroplast

Contains chlorophyll, traps energy from light to make food

Green Balloons

Nuclear Membrane

Controls what enters and exits the nucleus

Jump rope

 

 

 

 

 

“ExCELL with Organelles”