For Teacher: Preparation

1. For Teacher: Preparation Have song playing as students walk in and work on dyeing/weaving http://www.youtube.com/watch?v=jIhRderZTPU (song about the Shammanew- the people who weave fabric in Ethiopia) Websites on dyeing: http://www.knitty.com/ISSUEfall02/FEATdyedwool.html http://www.articlegems.co.uk/scinet/chemistry/cd/dyes.php Weaving videos http://www.youtube.com/watch?v=atynCzCTkdQ http://www.youtube.com/watch?v=Q28J8POlRaQ Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

2. Catalyst11/12/09 Describe what the following is photo depicting: HOMEWORK: Draw a design for weaving placemat 7 N 14.01 Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

3. Weaving Traditions of Ethiopia Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

4. History of Weaving • Passed on for many generations • Weaving communities within cities and towns • Sheromena, Addis Ababa Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

5. The Process of Weaving • Cotton is obtained from cotton plants or purchased from growers Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

6. The Process of Weaving • Cotton is spun into thread by women using a wooden spooling tool called a ___________ Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

7. The Process of Weaving • Spun cotton is then washed, dyed, and hung out to dry Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

8. History of Dyeing Natural Dyes throughout the world: • Extracts from flowers, animals, barks, roots, dry woods, fruit, leaves, etc • Red: madder root, cochineal beetles • Yellow: goldenrod, onion skin • Blue: indigo, red cabbage • Brown: black walnuts Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

9. History of Dyeing Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

10. Chemistry of Dyeing - Some dyes just stain thread, so it continues to wash out - Other dyes chemically attach to molecules of the fabric and can never be washed out Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

11. Chemistry of Dyeing - Cotton- long strands of cellulose molecules, twisted together Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

12. Chemistry of Dyeing - So how do we get the dye molecules and the cotton cellulose molecules to stick together? Mordant Metal ions Urine Alum (potassium aluminum sulfate) Salts- sodium, chromium, copper, iron, tin, iodine Tannic acid Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

13. Chemistry of Dyeing Mordanting A process where a mordant firmly attaches to cotton fibers and then binds the dye molecules Effects the color: Iron (II) - brown Aluminum- red Tin (II) – pink Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

14. Chemistry of Dyeing Mordanting Dye molecule attaches to a mordant which then binds to the wool fiber (opposite charges) Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

15. Chemistry of Dyeing Visible color Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

16. Chemistry of Dyeing Ethiopian natural dyeing - Extracts from locally grown vegetables Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

17. Hand-made Natural Dyes! • Today, you and your group members will be working to create your own natural dyes. • Each group will be dyeing wool yarn • Groups of 3-4 Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

18. Materials • Wool yarn • Hot plate • H2O • Beaker • NaCl • Vegetable/fruit- red cabbage leaves, yellow onion skin, blackberries, raspberries • Plastic knife • Tongs • Drying rack Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

19. Safety • Be careful with Hot plate- use tongs & gloves • Be careful with Plant dye- stains Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

20. Catalyst11/12/09 What is necessary to make dyes bind permanently with clothe fibers? HOMEWORK: Finish weaving placemat Mordents- metal salts 7 N 14.01 Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

21. Post Dyeing Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

22. The Process of Weaving • Once dried, the thread is spun onto large spools manually by the men Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

23. The Process of Weaving Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

24. The Process of Weaving • Yarn is then turned on a machine into smaller spools to be used during actual weaving Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

25. The Process of Weaving • Using a loom, sometimes dug into the ground, men can weave scarves, blankets, dresses, etc http://www.youtube.com/watch?v=atynCzCTkdQ http://www.youtube.com/watch?v=Q28J8POlRaQ Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

26. Ethiopian clothing Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

27. Ethiopian Weaving • Using our dyed yarn from yesterday and a 12” cardboard loom we will create our very own Ethiopian-inspired placemats Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

28. Ethiopian Weaving Materials • Cardboard loom • Warp thread • Pre-dyed Yarn • Plastic needle Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

29. Making the Loom- Warp • Tie note 6” down from end of string • Hook through first cut and thread string up and down, keeping it only on one side of the board • At the end, tie string with the beginning on the back of the board • SEE FOR EXAMPLE! Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009

30. Created by: Meghan Chidsey, Teaching the Human Experience Ethiopia 2009