Something to get your teeth into

Science Year 3/4
This unit is part of Year 3/4 Science The Circle of Life

Objectives

Are all your teeth the same? No! You need the right tooth for the job! Can you puzzle out which teeth bite, grip, tear, crush, grind and chew? You will learn their scientific names and the reason for their strange shapes.

Science Objectives
i) Describe the simple functions of the basic parts of the digestive system in humans
ii) Identify the different types of teeth in humans and their simple functions

Working Scientifically

  1. Making systematic and careful observations (of their teeth)
  2. Identifying differences, similarities or changes related to simple scientific ideas and processes

You Will Need

Provided Resources

  • Task sheets to support the Y3 and Y4 tasks

Additional Resources

  • Class set of small safe mirrors
  • A plate of apple quarters with the skin on and the core removed -1 quarter per child
  • Modelling clay, e.g. Plasticine™, ideally pink and white - enough for Yr3s to each make a model of their teeth
  • Pens & pencils
  • Scissors
  • Glue sticks

Lesson Planning

Teaching

  • To make close observations of the process of biting and chewing to investigate the role of different types of teeth.
  • To name the 4 different types of teeth and explain their function within the mouth.

Activities

  • Eat a slice of apple and observe the function of different teeth in biting and chewing (Yrs 3&4)
  • Either write an explanation of the structure and function of the 4 types of teeth (Yr4) or create a model of their lower teeth, drawing each type and matching the name with a description (Yr3)
  • Play an active game to embed knowledge of the shape/function of the 4 types of teeth (Yrs 3&4)


Investigation
What can we tell about an animal from looking at its teeth? Look at our teeth and those of different creatures. What types of teeth are there and what do they do? Relate differences to diet. (observing) Make a plasticine model of their lower set of teeth
Year 3- Match labels and annotations
Year 4 – Match labels write own annotations


Vocabulary
Jaw, incisors, molars, premolars, canines, tear, grind, chew, gums, enamel, acid, bacteria, tooth decay