Introduction to polymers. Science State Board, Class 7: lessons, tests, tasks.

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1.	Introduction to polymers
2.	Natural polymers
3.	Synthetic Polymers
4.	Natural fibre
5.	Silk - A natural fibre
6.	Synthetic fibre - Nylon, Polyester and Acrylic
7.	Rayon - A semi-synthetic fibre
8.	Synthetic fibres- Characteristics, advantages and disadvantages

1.	Introduction to polymers and natural polymers: fill in the blanks Difficulty: easy	2
2.	Introduction to polymers and natural polymers: match the statements Difficulty: easy	2
3.	Natural fibres and silk: fill in the blanks Difficulty: easy	2
4.	'True' or 'false' about natural fibres and synthetic polymers Difficulty: easy	2
5.	Answer the questions about natural fibres Difficulty: medium	4
6.	Answer the questions about rayon, silk and synthetic fibres Difficulty: medium	4
7.	'True' or 'false' about silk and synthetic fibres Difficulty: medium	4
8.	Synthetic fibres: fill in the blanks Difficulty: medium	2
9.	Polymers, natural and synthetic polymers: word match Difficulty: medium	4
10.	'True' or 'false' about introduction to polymers and natural polymers Difficulty: medium	4
11.	Polymers: statement and word match Difficulty: medium	5
12.	Natural and synthetic fibres: match the words Difficulty: hard	6
13.	Match the words about silk Difficulty: hard	6
14.	Analyse the statements about polymers Difficulty: hard	4

1.

Methodical recommendation

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