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change their colour. Discuss with the students why they change their colour.(. Some animals want to protect themselves.) Ask students what else things in the natural world can change their colour. Step Four: Consolidation to the tape and read after it together. 2. Grammar Practice Book 4B, page 28 3. Do an experiment for the students: First take out some paints and a bowl. And put some red paint in a bowl. Then add some green paint. After that mix