MealwormMealwormChange form during the life cycleChange form during the life cycle

MetamorphosisMetamorphosis

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Science Rice LabScience Rice Lab

Ruth Garcia, Moses Sandoval, Novella Cooper, Rovera Rosalinda, Cristina Cruz

Objectives

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SCI.5.2.06

SCI.4.2.06

TEKS: 4.6A/5.6CThe student knows that some change occurs in cycles. The student is expected to: describe and compare life cycles of

plants and animals.

Materials

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Terrarium with mealworms in difference life stages,Life Cycle chart, colors, paper, hands Lens, several containers to place stages of mealworm. List of animals that go through the metamorphosis process. Mealworm, butterfly, frog.

Teacher orders mealworms from Marcille Hollingsworth. www.enchantedlearning.com to label theCycles and take a quiz. There is also a quiz on www.brainpop.com on lifecycles. The book mealworm by Adrienne Mason & www.unitedstreaming. com. The AIMS activities Critters observation of a mealworm pgs.32-33. Stages on mealworm pg.36 We will conclude metamorphosis wheel pg.38 from Critters

Kingdom Animalia (animals), Phylum Arthropoda (arthropods),

Class Insecta (insects), Order Coleoptera (beetles),

Family Tenebrionidae, Genus Tenebrio,

Species T. molitor.

Classification:

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The mealworm is NOT a worm. It is the larval stage (grub) of the yellow mealworm beetle,

also called the darkling beetle (Tenebrio molitor).

Although the grub looks a bit like a worm, the mealworm has six small, jointed legs. Both the

larva and the beetle are nocturnal (active at night), but they are also active during the day.

Mealworm

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Both the adults and the larvae are scavengers that eat grains (hence the name mealworm) and some

seedlings. Because of this,

It is considered a pest. They also eat decaying material, like decomposing animals and dead

plants. They get all the water they need from the food they eat. Mealworms are eaten by many

animals, including many birds, rodents, spiders, lizards, and some other beetles.

Diet/Enemies

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The female darkling beetle

Eggs,

mealworms (the larval stage)

The pupa

Life Cycle

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The mealworm undergoes complete metamorphosisPLC 23

EggsThe tiny, white, bean-shaped eggs are about 2 mm long by .9

mm wide. The female darkling beetle lays hundreds of tiny, white, oval eggs, which hatch into tiny mealworms (the larval stage) - it

takes from 4 to 19 days to hatch.

Anatomy

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Larvae Are dark yellow with brown bands; they are up to about 35 mm long, have a segmented body, six legs (towards the front of the

body) and two antennae. Each mealworm eats a tremendous amount and grows a lot, molting (shedding its exoskeleton) many times as it grows

Anatomy

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The pupa Is white/cream with a large head and a pointed tail (it

darkens as it grows). Like all insects, It then enters the pupal stage (this stage lasts from 2-3 weeks

up to 9 months, if the pupal stage over-winters). The pupa does not eat and seems inactive, but it is transforming itself

into an adult

Anatomy

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AdultThis beetle has a hard exoskeleton, six jointed legs, two

antennae, compound eyes, and a body divided into three parts (the head, thorax, and abdomen). The adult is from 12

to 25 mm long and is dark brown.

After pupating, a white adult darkwing beetle emerges from the pupa -- it soon turns brown and then almost black. The

adult lives for a few months

Anatomy

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Life span Mealworm

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The entire life cycle takes about a year.

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On-hand Activity

Observation Activity

TASK TASK Question 1Question 1

A Q, S, R, TB R, T, Q, SC S, R, Q, TD T, S, R, Q

The pictures show the stages in the life cycle of a beetle. What would be the correct sequence for the development of the beetle?

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TASK TASK Question 2Question 2

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TASK TASK Question 3Question 3

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MealwormMealwormAssessmentAssessment

Student on-hand RubricStudent on-hand Rubric

VocabularyVocabulary PicturesPictures Team workTeam work PresentatiPresentationon

11 Perfectly Perfectly SpellingSpelling

Pictures Pictures colored and colored and well madewell made

Active Active Participation Participation

of of everybodyeverybody

Good Good explanatioexplanation of every n of every

stagesstages

22 Content Are Content Are language language

misspelledmisspelled

Color error, but Color error, but draws of draws of

animals wellanimals well

One group One group member member inactiveinactive

Poor Poor ExplanatioExplanatio

n of n of phasesphases

33 HFW HFW MisspellingMisspelling

Animals draw Animals draw wrongwrong

Two Two members members inactiveinactive

Multiple Multiple concepts concepts

errorserrors

44 Mixed Mixed vocabulary vocabulary

ErrorsErrors

No picturesNo pictures No body is No body is workingworking

NO NO presentatipresentati

onon

MealwormMealwormReferencesReferences

1. www.enchanted: learning.com to label the Cycles and take a quiz. 2. There is also a quiz on www.brainpop.com on lifecycles.

3. The book mealworm by Adrienne Mason & www.unitedstreaming. com.

4. The AIMS activities Critters observation of a mealworm pgs.32-33.

5. Stages on mealworm pg.36

6. We will conclude metamorphosis wheel pg.38 from Critters

MealwormMealwormPLC 23 Science Rice LabPLC 23 Science Rice Lab

Thank you

MealwormMealwormLearning Experience PLC 23Learning Experience PLC 23

Grade Level: K, 1, 2, 3, 4, 5Content Area: Life ScienceTitle: Change form during the life cycle: Metamorphosis-MealwormsDate: 02-16-2007

Materials: Terrarium with milkworms in difference life stages, Life Cycle chart, colors, paper, hands Lens, several containers to place stages of mealworm. List of animals that go through the metamorphosis process. Mealworm, butterfly, frog. Teacher orders mealworms from Marcille Hollingsworth. http://www.Science.Popalito.com. Finally one would enter into www.enchantelearning.com to label the

Cycles and take a quiz. There is also a quiz on www.brainpop.com on lifecycles. The book mealworm by Adrienne Mason & www.unitedstreaming. com. The AIMS activities Critters observation of a mealworm pgs.32-33. Stages on mealworm pg.36 We will conclude metamorphosis wheel pg.38 from Critters

MealwormMealwormLearning Experience PLC 23Learning Experience PLC 23

Educational Objective: CLEAR: SCI.5.2.06/SCI.4.2.06 TEKS: 4.6A/5.6C

Teacher Background: Teacher will be familiarized with Life Cycle & Pattern of Changes in animals and insects. Use cards form bin given to us by REMSL. Match cards with lifecycle. Have students elaborate on each lifecycle. Draw & illustrate.

Engage: Show the students a Muppets show where a litter butterfly are taking with a caterpillar that become in other animal during the conversation Use a convertible Muppet that is in one side a caterpillar and in other side a butterfly. Explore: Kids will observed each stage of the mealworm life cycle groups of four, using hand lens and sticks to touch and move the mealworm. The students will view www.UnitedStreaming.com. watch the lifecycles.

MealwormMealwormLearning Experience PLC 23Learning Experience PLC 23

Explain: Students will place each stage of life cycle in individual container. Draw, label, and explain process egg, larva, pupa and adult. Make cards using powerpoint as guide.

Evaluate: Give a student an empty cycle chart and ask students to write and explain each stage.Taks Connection.

Elaborate: Powerpoint presentation Modifications: Verbal explanation of each stage. Act out each stage.