Science Year 5 - Acid and alkaline

Subject             : Science  ( Year 5 )

Date                 : 25.10.2011 (Tuesday)

Time                : 10 : 00 – 10 : 30 (30 min)

Standard           : 5S

Enrolment        : 41 pupils

Topic                : Acid and alkaline

Sub-topic          : 2.1 Understanding the properties of acidic , alkaline and neutral substances

Learning Outcomes : By the end of the lesson, pupils will be able to

a)      Identify acidic, alkaline and neutral substances using litmus paper.

b)      Identify the taste of acidic and alkaline food.

Previous knowledge : Pupils have learnt about

a)      The tastes of food substances and colour.

b)      Mixing vinegar with baking powder in Year 3.

Thinking skills : Making hypothesis, generating ideas, making conclusions

Moral values : Being cooperate, being respect

Teaching and learning resources : Litmus paper, lemon, tooth paste, soap, cooking oil, vinegar, canned drink, shampoo, sugar, salt, yogurt

                             

STEP/TIME	CONTENT	ACTIVITY	REMARKS
Introduction (5 min)	To predict the taste of substances.	1  Teacher ask pupil about the taste of lemon. Answer :The taste is sour. 2. Teacher explain that substances can be classified  as acidic, alkaline and neutral. 3. Teacher as people to observe the the colour change of the wet red and blue litmus paper after put on the lemon. Observation: The red colour of litmus paper no changes colour, but the blue colour of litmus paper changes to red colour. 4. Teacher asks pupils to carry out hands-on activity to the experiment.	AVA: Lemon Red and blue colour of  litmus paper Thinking Skill : predict
Step 1 (10 min) Step 2 (5 min)	To observe the change colour of blue and red litmus paper. Group discussion to make : a   Observation b   Conclusion	1  Teacher asks pupil conduct an experiment in groups to observe the change colour of wet blue and red litmus paper . 2  Teacher provides each group blue and red colour litmus paper and : Group A  lime, mineral water, shampoo, vinegar. Group B canned drink, cooking oil, tooth paste, sugar. Group C  yogurt, salt, shower jell, pineapple . Group D  soap, liquid detergent, tomato, ketchup. 3  Teacher remind pupils when testing, the litmus paper must be wet, also not to taste the food before being advised to do so. 4  Pupils work in groups and record their finding on the change colour of blue and red litmus paper. 1   Teacher asks pupil to discuss in group to make hypothesis and conclusion. 2   Teacher goes around to observe pupils.	AVA : litmus paper, lime, mineral water, shampoo , vinegar, canned drink, cooking oil, tooth paste, sugar, yogurt, salt, shower jell, pineapple, soap, liquid detergent, tomato and ketchup. Thinking Skill: to observe Moral Value : Being cooperate Thinking Skill : Observation and conclusion Moral Value  : Being cooperate
Step 3 (7min)	Summarizing	1  Teacher asks each group make presentation for group discussion. 2   Pupils respond : Lime, vinegar, canned drink, pineapple, tomato : changes blue litmus paper to red colour, but red litmus paper no changes the colour. The taste : sour Shampoo, tooth paste, liquid detergent , soap : changes red litmus paper to blue colour, but blue litmus paper no changes the colour. The taste : bitter mineral water, sugar, yogurt, salt, ketchup : No changes red and blue litmus paper colour. The taste : neutral , sweet or sour 3  Teacher discuss the answer  with pupils.	Moral Value : Being respect
Closure (3 min)		1   Teacher give worksheet to each pupil. 2   Teacher goes around to observe pupils.	AVA : worksheet

 Remarks : Teacher  can play the information.

Name : 

 Class :

Topic : Acid and alkaline

1.      Lee Fong and Fatimah carried out an investigation on the properties of substances M, N and O.

They used blue and red litmus papers to investigate the properties of the substances. The table below shows the observations of the investigation.

Substance	The colour changes of litmus paper
	Red litmus paper	Blue litmus paper
M	No change	No change
N	Change to blue	No change
O	No change	Change to red

(a)    State the thing that is kept the same.

      ___________________________________________

(b)   Explain the colour changes of litmus paper on Substance N.

___________________________________________

(c)    Based on the observations above, predict the taste of Substance M and N.

(i)  Substance M: ___________________________ 
                             
(ii)  Substance O: __________________________

Underline the correct answers.

1.      ( Alkaline , Neutral ) substances are slippery to the touch and taste bitter.

2.      The pH value of neutral substances is ( 7 , 8 ) whereas acidic substances has the pH of ( 1-6 , 8-14 ).

3.      Strong acidic and alkaline substances are ( corrosive , tetanus ) and ( protest , burn ) our skin.

4.       ( Salt water , Soap ) does not change the colour of a litmus paper because it is ( neutral , acidic ).

5.      Substances that taste bitter are generally ( acidic , alkaline ).

Science Year 4 --- Harmful Habits ( Drugs And Alcohol )

Subject             : Science

Time                : 10 : 00 – 11: 00 (60 min)

Topic                : Living Things Have Basic Needs

Sub-topic          :  1.14 Harmful Habits – Drugs And Alcohol

Learning Outcomes : By the end of the lesson, pupils will be able to

a)      Give examples of habits that bring harm to human life.

b)      Explain that taking drugs and alcohol can delay a person’s response to stimuli.

Previous knowledge : Pupils have learnt about,

a)      Smoking, drugs and alcohol is harmful to people

Thinking skills : Making predict, making hypothesis, making conclusion

Moral values : Being appreciate , being carrying

Teaching Strategies :

1        Teacher plays the introduction component and asks pupil to predict the effects of drinking alcohol.

               

2        Teacher encourage pupils to discuss and give answers to the questions.

3        Teacher plays the content component .

4        Teacher asks pupils discuss in group the bad effects of taking drugs.

5        Pupils present their discussion.

6        Teacher plays the content component.

7        Teacher concludes the lesson by going through the summary component.

Science Year 4 --- Humans Excrete And Defecate

Subject             : Science

Time                : 10 : 00 – 11 : 00 (60 min)

Topic                : Living Things Have Basic Needs

Sub-topic          :  1.10 Humans Excrete And Defecate

Learning Outcomes : By the end of the lesson, pupils will be able to
a) State the humans excrete and defecate.
b) Give reason why humans need to excrete and defecate.

Previous knowledge : Pupils have learnt about,
a) Humans breathe.


Thinking skills : Generating ideas, making conclusions
Moral values : Being appreciate , being honest

Teaching Strategies :
1 Teacher plays the introduction.

             

2 Teacher asks pupils to gives examples of activities that would make them sweat.
3 Teacher plays the content component.

4 Teacher asks about the different between  excrete and defecate.

5 Teacher plays the content component.

6    Teacher plays this component to show human defecate.

              

7     Teacher plays the summary component. Teacher conclude that humans need to                                    

excrete and defecate  to saty healthy.                                                                                             

 

Science Year 4 --Harmful Habits (Smoking)

Subject             : Science

Time                : 10 : 00 – 11: 00 (60 min)

Topic                : Living Things Have Basic Needs

Sub-topic          :  1.13 Harmful Habits -- Smoking

Learning Outcomes : By the end of the lesson, pupils will be able to

a)      Give examples of habits that bring harm to human life processes.

b)      State the effect of smoking on lungs.

Previous knowledge : Pupils have learnt about,

a)      Smoking is harmful to people

Thinking skills : Making predict, making hypothesis, making conclusion

Moral values : Being appreciate , being carrying

Teaching Strategies :

1        Teacher plays the introduction component and asks pupil how they feel when people around them smoke?

               

2        Teacher encourage pupils to discuss and give answers to the questions.

3        Teacher plays the content component.

4        Teacher asks pupils discuss in group why is smoking a harmful habit ?

5        Pupils present their discussion.

6        Teacher plays the content component.

7        Teacher concludes the lesson by going through the summary component.

8        Teacher asks pupils to make a poster to show the bad effects of smoking.

Science Year 4 --- Rate Of Breathing

Subject             : Science

Time                : 10 : 00 – 11 : 00 (60 min)

Topic                : Living Things Have Basic Needs

Sub-topic          :  1.9 Rate Of Breathing

Learning Outcomes : By the end of the lesson, pupils will be able to

a)      Explain human breathe.

b)      Conclude that not all individual have the same rate of breathing.

Previous knowledge : Pupils have learnt about,

a)      Humans breathe.

b)      Human need air to stay alive.

Thinking skills : Generating ideas, making conclusions

Moral values : Being thankful to God

Teaching Strategies :

1        Teacher plays the introduction.

2        Teacher prompt pupils to think if they know which direction their chests move when they inhale and exhale air.

3        Teacher plays the content component.

4        Ask pupils to compare how many times they breathe in a minute as compared to their friend.

5        Teacher plays the content component.

                             

6      Teacher plays the content component. Ask pupils work in group then create a table and write down the number of times they breathe in a minute.

      7    Teacher conclude the lesson and reinforcing that not everybody has the same rate of breathing.

Science Year 4 --- We Breathe

Subject             : Science

Time                : 10 : 00 – 11: 00 (60 min)

Topic                : Living Things Have Basic Needs

Sub-topic          : 1.8 We Breathe

Learning Outcomes : By the end of the lesson, pupils will be able to

a)      Explain human breathe.

b)      Differentiate the air that we inhale and the air that we exhale.

Previous knowledge : Pupils have learnt about,

a)      Humans breathe.

b)      Human need air to stay alive.

Thinking skills : Generating ideas, making conclusions

Moral values : Being thankful to God

Teaching Strategies :

1        Teacher plays the introduction.

2        Ask pupils the meaning of  inhale and exhale.

3        Teacher plays the content component.

4        Ask pupils to differentiate the air we inhale and the air we exhale.

5    Teacher play the summary component.