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LESSON C ONCEPT Another method of separating mixtures is sieving. It is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very smal holes. Coarse particles are separated or broken up by grinding against one-another and against screen openings. Depending upon the types of particles to be separated, sieves with different types of holes are used. Materials one-fourth (¼) kg flour one (1) strainer/sifter one (1) plate/bowl What to do: 1. Pour one-fourth (4) flour on the strainer/sifter. 2. Sift it on a plate/bowl. 3. Answer the guide questions and write your answers on your activity notebook. Guide questions: REGH 1. Describe the mixtures. did not? the strainer/sifter and wwhile others did not? 2. Whieh particles passed th 3. Why do you think some particles passed through the 4. Will the product be beneficial to the community? How? Sale
