: He Waikawa, He Kawakore Ränei — Acid or Base?
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Approach:  Station
396Kb
Focus: Testing acid or base 
Resources: 5 small sample cups with solution in each, layout sheet, 6 teaspoons,
5 ice block sticks, litmus paper
He whakatau kupu: wairewa = solution, pepa tohu waikawa = litmus paper, waikawa = acid;
kawakore = base, winika = vinegar, pekena höura = baking soda

Questions/instructions:

Set out the equipment before the experiment begins, as follows.

Set up the 5 small sample glasses in the correct place on the layout sheet. Put a teaspoonful of the appropriate substance into each container and half fill the container with water. Mix well using a clean ice block stick for each solution.

The solutions and the litmus papers need to be replaced for each student.

[Setup instructions for administrator provided
in English only.]

[click on picture for enlargement]

% responses
1. E 5 ngä wairewa kei runga i te papa mahi. Whakamahia te pepa tohu waikawa kia kitea ai mënä he waikawa, he kawakore, he momo wai kë atu ränei ngä wairewa nei. Whakamahia he pepa tohu waikawa hou mä ia wairewa.

Mënä he waikawa, ka mäwhero te pepa tohu waikawa kahurangi.
Mënä he kawakore, ka kahurangi te pepa tohu waikawa mäwhero.

You have five different solutions set out on the mat.Use the litmus paper to find out if each solution is an acid,a base or neither. Use a new piece of litmus paper for each solution.

An acid turns blue litmus paper pink.
A base turns pink litmus paper blue.		  
 
Tohua tëtahi pouaka kotahi mö ia wairewa
Tick one box for each solution
 
waikawa
acid
kawakore
base
momo wai kë atu
not acid or base
wai ärani
orange juice
3
wai horoi
cleaner
3
winika
vinegar
3
wai mäori
water
3
pekena höura
baking soda
3
 
 

49

42

58

40

33
2. Pëhea e puta ai te onepü? He aha te tïmatanga mai?

If an acid was spilt and was making a hole in the carpet what could you do to help stop the acid from working?
add a base (to neutralise acid)

16
add water (to dilute)

23
 

Total score:
6

0
5

14
4

14
2–3

32
0–1

40
Commentary:
Mäori students in general education (GEd) scored statistically significantly higher than students in Mäori immersion education (MIE).
 
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