lesson plan in maths

May 12th, 2015
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This document will assist both the teachers and students to understand and pass in maths purchase one for your benefit it gives all the explanation in maths solved examples

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Lesson Plan 16Cool Chemistry - DIY pH IndicatorBrief descriptionRed cabbage juice is a natural pH indicator makingthis classic activity one of the most popular chemistryexperiments for children. The indicator changes frompurple to bright pink in acids to blue or yellow-greenin bases. Preparation time and consumables havebeen greatly reduced in this lesson plan and thewhole activity can be conducted at virtually no cost.The pH indicator is extracted as a teacherdemonstration while students build their ownMiniLabs using clear straws as test tubes todramatically reduce the amount of indicator andchemicals used. They use the pH indicator to classify avariety of safe household chemicals including vinegar,laundry powder and lemonade.Beautiful Results usingRed Cabbage pH IndicatorDuration:60 - 80 minutesYear level:Lower to upper primary*Topics:Natural and process materials, Energy and ChangePreparation:10 to 20 minutesExtensions:Investigate the effect of carbon dioxide gas on water using pHIndicators, Investigate antioxidants (anthocyanin is a powerfulantioxidant)OverviewWhole classDiscuss acids and bases and pH (Teacher Notes P 5),(15 20 min)Perform Teacher Demo 1 Extracting Red CabbageAcid-Base Indicator (see Teacher Notes)Perform Teacher Demo 2 Preparing Test Chemicals (Teacher Notes P 6)Distribute worksheets, discuss small group activitiesand safety precautionsAllocate groups and jobsSmall groupsConstruct Min

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