SLOVENIA EXPERIMETS COMENIUS

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WATER EVERYWHERE : 

WATER EVERYWHERE Experiments with water in 3 workshops. School: OŠ Drska Date: 19 th March 2010 Novo mesto

1. EXPERIMENT: THE HARDNESS OF WATER : 

1. EXPERIMENT: THE HARDNESS OF WATER Kratka razlaga: Na čajne žličke damo kapljice izbranega vzorca. Segrevamo nad plamenom svečke (voda mora v celoti izpareti). Razvrstimo jih glede na količino trdnega preostanka. Izvajalci: 7. razred in učiteljici D. Kavšek in M. Stariha Short explanation: Put some drops of the chosen sample on a teaspoon. Heat above candle flame (water must evaporate completely). Sort the spoons according to the quantity of the solid remain. Performers: 7th class and teachers D. Kavšek and M. Stariha

Slide 3: 

Heating the tube. Water limestone remains. Comparing all the water samples after heating. Water samples before heating.

2. EXPERIMENT: PREPARATION OF AROMATIC VINEGARS : 

2. EXPERIMENT: PREPARATION OF AROMATIC VINEGARS Kratka razlaga: Kis naredimo iz posameznih ali s kombinacijami več zelišč. Damo jih v kozarec za vlaganje in jih polijemo s kisom. Kozarec zapremo in pustimo na toplem mestu 10-14 dni. Vmes ga večkrat pretresemo in ga poskusimo. Če je razvita primerna aroma, kis precedimo, nalijemo v temne steklenice in dobro zapremo. Izvajalec: 7. razred in učiteljica Jožica Muhič Short explanation: We make the vinegar from individual or combinations of various herbs. We put the herbs in a jar and pour vinegar over them. We seal the jar and keep them in a warm place for 10-14 days. During this time we shake it and taste it. If a necessary aroma is developped, we filter it and then pour it in dark bottles and seal them securely. Performer: 7th class and teacher Jožica Muhič

Slide 5: 

Rosemary leaves. Jars filled with aromatic vinegars. Pouring some vinegar into the honey.

3. EXPERIMENT : MAGIC GLASS : 

3. EXPERIMENT : MAGIC GLASS Kratka razlaga: Potrebujemo košček papirja, kozarec, vodo. V kozarec nalijemo vodo do roba. Na kozarec položimo kos papirja in naj položimo dlan. Kozarec obrnemo in počasi odmaknemo dlan. Tudi ko roko odmaknemo, papir sam zadrži vodo. Izvajalci: 2. razred ob pomoči učencev 9. razreda ter učiteljic M. Simončič in O. Jenič Pour some water in the glass and put a piece of paper over it.

Slide 7: 

Short explanation: We need a piece of paper, a glass and water. We pour some water in the glass to fill it to the top. We turn the glass over and remove the hand slowly. Even when the hand is removed, the paper magically holds the water in the glass. Performed by: students in class 2 ( aged 8 ) with the help of students in class 9 ( aged 14) and teachers M. Simončič and O. Jenič

Slide 8: 

Made by: Ana Plantan English translation: Jakob Imamović and Slaven Teinović Mentors: Ankica Milošević ( photos), Tina Šenica ( English version) Photo: Hana Fabjan Students: ages 8 and 12 , Teachers: M. Simončič, O. Jenič, D. Kavšek, J. Muhič in M. Stariha

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