✏️Metamorphosis: The Life Cycle of a Butterfly

Lesson plan

Objectives

• Identify and name the four stages of a butterfly life cycle in order.
• Describe the physical changes that occur during metamorphosis.
• Explain the basic needs of a butterfly at each stage of development.
• Define metamorphosis as a process of complete change in body form.

Materials

• Life cycle poster or digital slide deck
• Butterfly life cycle sequencing cards
• Magnifying glasses
• Craft pasta (rotini, shell, bowtie, and round seeds)
• Paper plates and glue
• Science journals

Warm-up

Begin by asking students if they have ever seen a caterpillar and a butterfly. Ask them to think about how a tiny crawling insect turns into a flying one. Show a short 1-minute time-lapse video of a butterfly emerging. Have students turn and talk to a partner about what changed during the video.

Direct instruction

1. Define life cycle as the series of changes an organism goes through during its life.
2. Introduce Stage 1: The Egg. Explain that a mother butterfly lays tiny eggs on a specific leaf.
3. Introduce Stage 2: The Larva (Caterpillar). Explain its main job is to eat leaves and grow quickly.
4. Introduce Stage 3: The Pupa (Chrysalis). Describe how the caterpillar builds a hard shell to protect itself while changing.
5. Introduce Stage 4: The Adult Butterfly. Explain that it emerges with wings and starts the cycle over.
6. Define metamorphosis as the complete transformation from a larva to an adult.
7. Model how to sequence these stages using a circular diagram showing the arrows returning to the start.

Guided practice

Draw a large circle on the whiteboard divided into four quadrants. As a class, place picture cards in the correct order. For example, if we start with the egg, we must follow with the larva. Ask: 'What would happen if the pupa stage was skipped?' Discuss how each stage is necessary for the next to occur.

Independent practice

Students will create a 'Pasta Life Cycle' on paper plates. They will glue a seed for the egg, a rotini pasta for the larva, a shell pasta for the pupa, and a bowtie pasta for the adult butterfly. They must label each stage and draw arrows showing the flow of the cycle.

Closure

Review the four stages by playing a quick game of 'Simon Says' using body movements for each stage (huddle for egg, crawl for larva, stand still for pupa, wave arms for butterfly). Exit ticket: Write down which stage of the life cycle involves the most eating.

Assessment

Mastery is measured by the correct sequencing and labeling of the four stages on the independent pasta project and the accuracy of the final quiz scores.

Differentiation

Scaffold: Provide a pre-labeled template for the pasta activity for students who struggle with writing. Extension: Advanced learners can research and write one sentence about how the monarch butterfly migration fits into its life cycle.

Butterfly Life Cycle Review

Complete each question about the different stages of a butterfly's life.

1. What is the very first stage of the butterfly life cycle?
2. What is another name for the larva stage?
3. What does a caterpillar do most of the time?
4. What is the hard shell called that protected the pupa?
5. True or False: A butterfly has wings when it is in the larva stage.
6. Which stage comes immediately after the egg?
7. How many legs does an adult butterfly have?
8. What is the process of changing shape called?
9. Where do butterflies usually lay their eggs?
10. Draw an arrow to show which stage comes after the pupa.

Butterfly Life Cycle Quiz

1. What is the correct order of the life cycle?
   • Egg, Pupa, Larva, Adult
   • Egg, Larva, Pupa, Adult
   • Larva, Egg, Pupa, Adult
   • Adult, Pupa, Larva, Egg
   Answer: Egg, Larva, Pupa, Adult
2. Which stage is known for rapid growth and eating?
   • Egg
   • Larva
   • Pupa
   • Adult
   Answer: Larva
3. What happens inside the chrysalis?
   • The caterpillar sleeps
   • The caterpillar eats
   • The body transforms into a butterfly
   • The butterfly lays eggs
   Answer: The body transforms into a butterfly
4. What is the pupa called in a butterfly's life cycle?
   • Cocoon
   • Chrysalis
   • Nest
   • Shell
   Answer: Chrysalis
5. How does a butterfly start its life?
   • As a small bird
   • As a flying insect
   • As a tiny egg
   • As a pupa
   Answer: As a tiny egg
6. Metamorphosis means a change in...
   • Color
   • Diet
   • Body form
   • Location
   Answer: Body form
7. What does a butterfly use to fly?
   • Antennae
   • Wings
   • Legs
   • Proglottids
   Answer: Wings
8. Why is it called a 'cycle'?
   • Because it is fast
   • Because it involves wheels
   • Because it repeats over and over
   • Because butterflies like to spin
   Answer: Because it repeats over and over

Butterfly Home Exploration

This week, students are learning about how butterflies grow and change. Please help your child explore their backyard or a local park to look for evidence of these stages in nature.

• Look for leaves with small holes, which might show where a larva has been eating.
• Identify 3 different colors you see on butterflies in your neighborhood.
• Draw a picture of a chrysalis and explain to a family member what is happening inside.
• Find a leaf and draw what a tiny butterfly egg might look like on it.
• List two ways a caterpillar is different from an adult butterfly.
• Watch a video online of a butterfly emerging from its pupa and describe it.

Vocabulary

Life Cycle · noun

The stages an organism goes through from birth to death.

"The life cycle of a butterfly has four main parts."

Egg · noun

The first stage of a butterfly's life, laid on a leaf.

"The tiny yellow egg was stuck to the bottom of the leaf."

Larva · noun

The second stage of the life cycle, also called a caterpillar.

"The larva crawled along the stem to find more food."

Pupa · noun

The third stage where the insect is inside a chrysalis.

"The pupa hung silently from the branch."

Chrysalis · noun

The hard outer shell that protects the pupa.

"A green chrysalis is hard to see among the leaves."

Adult · noun

The final stage where the insect can fly and reproduce.

"The adult butterfly flew to the flower for nectar."

Metamorphosis · noun

A complete change from one form to another.

"The frog and the butterfly both go through metamorphosis."

Antennae · noun

Long feelers on the head used for sensing.

"The butterfly moved its antennae to smell the air."

Nectar · noun

Sweet liquid found in flowers that butterflies eat.

"The butterfly used its tongue to drink the nectar."

Exoskeleton · noun

A hard outer skeleton that supports an insect's body.

"Insects have an exoskeleton instead of bones inside."

Activities

• Life Cycle Relay · 10 minutes

  Divide students into teams. Place images of the four stages at the other end of the room. One student at a time runs to grab the 'next' stage in the cycle and brings it back. The first team to assemble the full cycle correctly in order wins.

• Observational Drawing · 10 minutes

  Students use magnifying glasses to look at photos of caterpillars and butterflies. They must draw one specific detail they noticed, such as the segments on the caterpillar's body or the patterns on the butterfly's wings, labeling the body parts they identify.

• Metamorphosis Mime · 10 minutes

  The teacher describes a stage of the life cycle, and students must act it out without speaking. For the egg, they curl into a ball. For the larva, they wriggle. For the pupa, they stand perfectly still. For the adult, they flap their wings gracefully.

• Pasta Plate Models · 15 minutes

  Students create a visual representation of the life cycle by gluing different pasta shapes onto a paper plate divided into four sections. They use rice for eggs, rotini for caterpillars, shells for the chrysalis, and bowtie pasta for the butterfly, then draw arrows to connect them.