Lesson No: 7 Unit Title: Variation and Classification

Unit No: 7D

Lesson Title: No Backbone

NC Ref:

Objectives:
MK — Invertebrates are animals without a backbone; there are many groups. Word-invertebrate
SK — the features of molluscs, echinoderms, arthropods; insects ate a group of arthropods. Words — mollusc, echinoderm,arthropod,insect,exoskeleton.
CK —all the features of the other invertebrate groups.Words — annelid, flatworm, roundworm, cniderian,sponge,larva,moulting,pupa,metamorph osis.

Lesson outline:            Timing:
Starter: Recap animal kingdom and vertebrates—introduce invertebrates and give definition.

Expl Sci 7 page 54 is useful

Activity:     

1. Introduce molluscs, echinoderms and arthropods; give examples of each.

Molluscs - crawl on a single fleshy pad (snail)

Echinoderms - have bodies divided into 5 parts, have a spiny outer covering (starfish)

Arthropods - have jointed legs, bodies divided into sections, have a thick, hard outer covering (spider)

Encourage pupils to think of further examples of animals in these three groups or use W/sheet 7De/2

2. Try Q1, 2 and 3 on page 54 Expl Sci 7

Using specimens and /or photos ask the pupils to write down their main distinguishing features.

Discuss and give the correct identifying features: try Worksheet 7De/3

3. Look at arthropods.

Can use specimens and/or photos on page 55 Expl Sci 7 to show the different groups.

(crustaceans, arachnids, insects, centipedes)

Concentrate on insects and outline their characteristics; can introduce other groups as appropriate

Use worksheet 7De/4 and/or p. 55 in pupil book.

Could use leaf lifter and pooters to collect live specimens or Skill sheet 51 and SS52

Plenary:      Recap whole classification system.

Homework:
Revise for test

Risk Assessment:

If use leaf litter and pooters, pooters should be sterilised before use, hands washed afterwards and all animals returned to habitat.