Comments on: Rock Candy Geodes – A Sweet Science + Geology Project

By: Karyn Tripp

Karyn Tripp — Sat, 18 Dec 2021 13:52:08 +0000

In reply to Jen Ward. Yes, definitely!

By: Jen Ward

Jen Ward — Mon, 13 Dec 2021 17:58:04 +0000

Awesome! I teach once a week so I would have to take them home and bring them back the following week for the kids. Do you think they would hold-up that long? Thanks!

By: Julia Pace

Julia Pace — Mon, 17 Apr 2017 15:53:21 +0000

Interesting experiments – fun. I wonder if there is a way to teach health with them in addition. I cringed when I saw shortening as an ingredient – hoping the kids weren’t eating trans fats. I guess calcium alginate in the froodles is an OK food. Very creative lessons. The kids must love your classes.

By: Louette McInnes

Louette McInnes — Fri, 15 Jan 2016 22:09:18 +0000

I used to use a range of edible projects to teach some geology – very popular for the boys I taught to do at home or in class.
1) Sedimentary rocks -just wet some coloured sugar enough to get it to stick like wet sand. Mold in a cup or little cake mold and tip out to dry over night. Instant sedimentary rock, just the way it really forms in nature, just a few million years faster.
2) basalt vs rhyolite lava – cook up some golden syrup as for hokey pokey candy
100 grams caster sugar
4 tablespoons golden syrup
1 ½ teaspoons bicarbonate of soda via Nigella Lawson
slowly bring to a boil. Pour out a little bit on greased foil – runs like basalt lava.
add baking soda and pour out immediately – stiff and foamy like rhyolite
3) heat circulation inside the earth – bring a small pot of water to the boil. Throw in a handful of uncooked rice or macaroni. Observe the way the rice/pasta moves up, around, then down, like the circulation that moves the tectonic plates over the earth.
4) metamorphic rocks transformed by heat – any good cookie recipe for molded cookies or ones you can press a pattern into. If you layer vanilla and chocolate dough, you can apply a little pressure from the side or use the tines of a fork to form anticline and syncline forms.
5) fossil casts – sugar as for sedimentary rocks, put into a patty and then a shape pushed in to make the cast. Let dry and eat!

By: Erin @ Nourishing My Scholar

Erin @ Nourishing My Scholar — Wed, 03 Jun 2015 14:56:14 +0000

This is awesome!!!! My son loves rocks and geodes. How cool to make it out of candy!