# Category: Hanga | Create

## The Scientific method.

Title: The Scientific Method

Purpose: What do you want to learn/find out?

 How can we change the speed of the reaction between Hydrogen Peroxide and yeast?  How long can the reaction last? How big can the explosion be with Hydrogen Peroxide and yeast, over and over again?

Hypothesis: Try to predict the answer to the problem. Another term for hypothesis is ‘educated guess’. This is usually stated like ” If I…(do something) then…(this will occur)

 Maybe if I mixed the hot water and yeast smooth then it would react with a big explosion.

Materials: List everything you will need to conduct your experiment.

 Hydrogen peroxide,yeast,warm water,food colouring (o),dishwashing liquid.

Experiment procedure: The fun part! Design a test or procedure to confirm or disprove your hypothesis. Write down each step so that someone else could do the same experiment.

 1. Pour hydrogen peroxide into the bottle and add dish soap and  food colouring. 2.  Put yeast in a separate cup and put 3 tablespoons of warm water into the yeast and  mix the yeast with a spoon.  3. Pour the hydrogen peroxide into the yeast and watch it explode.

Analysis/Data: Record what happened during the experiment.

 If I didn’t leave the cup with yeast out too long, then it would make a bigger explosion. Also, we should have added more hot water to the yeast, so it could make a bigger explosion. When we put the hydrogen peroxide in the yeast it made a foamy and fizzy reaction.

Conclusion:Review the data and check to see if your hypothesis was correct.

## Liquid solid gas. ## Vaha Sun Poster. ## Building a whole from a known fraction.

We are learning to build a whole from a known fraction.

 Question Working Answer If ⅓ equals 10 what is the whole? 10+10+10 =30 3×10=30 30 If ⅕ equals 2, what is the whole? 5×5=25  5+5+5+5+5=25 2×5=10 5+5=10 25 10 If ⅙ equals 6, what is the whole? 6×4=24 6+6+6+6=24 24 If 1/10 equals 3, what is the whole? 3×10=30 10+10+10=30 30 If ⅕ equals 5, what is the whole? 5×5=25 5+5+5+5+5=25 25 If ⅓ equals 4, what is the whole? 4×3=12 4+4+4=12 12 If ¼ equals 7, what is the whole? 7×4=28 7+7+7+7=28 28 If ½ equals 8, what is the whole? 8×2=16 8+8=16 16

## 4x, 6x, 5x Table quiz.

4x, 5x, 6x Table quiz

 4x 5x 6x 4×1= 4 5×9=45 6×10=60 4×7=28 5×2=10 6×4=24 4×6=24 5×5=25 10×7=70 4×4=16 5×7=35 6×2=12 4×2= 8 5×1=5 6×5=30 4×0=0 5×8=40 6×0=0 4×5=18 5×0=0 6×8=28 4×3=12 5×4=20 6×3=18 4×9=32 5×10=50 6×1=6 4×10=40 5×5=25 6×6=42 4×8=28 5×6=30 6×9=54