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Fizzing Fossil Dinosaur Eggs – Digging Up Dinosaurs by Aliki

Dinosaurs are our hot topic of the moment – I probably know more that I ever wanted to know about an Aptosaurus, Iguanadon and a Paracelapharus (I have no idea whether that is the spelling or not!), and with this month’s Virtual Book Club for Kids author being Aliki, and with one of them Digging Up Dinosaurs an explanation of fossils we thought it was perfect for us.

Fizzing Fossil Dinosaur Eggs - extension activity for Digging Up DInosaurs by Aliki

The book Digging Up Dinosaurs (affiliate link),  is a Level 2 Reader Science book aimed at 5 – 8 year olds with fantastic facts and illustrated in a mix of pictures and comic book style images explaining process it was perfectly aimed at reading with J who is about to enter year 1 and is mad about all things dinosaur as well as discovering about the world around him. To connect with the book I decided it was time to make some dinosaur eggs and excavate the fossil dinosaurs from the middle of them.

Why not check out some of these other fun ways to make fossils with kids!

To make fizzing fossil dinosaur eggs you will need

Baking Soda (Bicarbonate Soda)
Black Food Colouring
Baking Tray
Small plastic dinosaurs (if you can get small plastic dinosaur skeletons even better)
Syringe or dropper

Printable Dinosaur Games and Activities Now Available in the Rainy Day Mum Store

Fizzing fossil Dinosaur Eggs

In a large bowl add your baking soda and some of the black food colouring – adding the food colouring will give the eggs a more stone like appearance. Gradually add the water you want to form a mouldable paste.

Fizzing fossil dinosaur eggs - extension activity for Digging Up Dinosaurs by Aliki

With the small dinosaur mould the paste around the outside of the dinosaur and form into an egg like shape and then put on a baking tray to dry over night – as they dry the egg will harden and lighten in colour as well.

Discover more Dinosaur Themed Activities for Toddlers and Preschoolers to play, learn and create with.

We then set about excavating our fossils from the eggs – in the book Aliki talks about the different people involved in fossil finding and this gave us an opportunity to talk about some of these jobs. To excavate the eggs we used a syringe filled with vinegar. The vinegar reacts with the baking soda fizzing up.

Fizzing fossil dinosaur eggs - extension activity for Digging Up Dinosaurs by Aliki

The kids filled up the syringes and then slowly squirted the vinegar over the eggs and watched as they fizzed. J decided to help the excavation with a spoon to split the eggs open and T using a stick to drill a hole to put the vinegar into to fizz from the inside as well as on the outside.

Fizzing fossil dinosaur eggs - extension activity for Digging Up Dinosaurs by Aliki

As the eggs reacted the dinosaurs become visible and they were cleaned and then added to our dinosaur box.

Fizzing fossil dinosaur eggs - extension activity for Digging Up Dinosaurs by Aliki

More Dinosaur Inspired Books for Toddlers and Preschoolers

Get your budding Paleontologist reading with these roaring good reads Dinosaur Books for toddlers and preschoolers - featuring fiction and non-fiction.

Dinosaur Books to Read Aloud and Together with Toddlers and Preschoolers

More Fossil Activities for Kids

Why not try making 3 different sort of fossils with your kids

shell cast fossil made and held by a child
Easy Kids Craft to make Salt Dough Dinosaur Fossils. Great to do with kids from toddler upwards.
Discover how trace fossils are made with this fun sensory science activity for kids using edible mud dough and dinosaurs.

Make cast fossils, mould fossils or trace fossils with our 3 simple activities for kids.

Cerys Parker

Cerys is a marine biologist, environmental educator, teacher, mum, and home educator from the UK. She loves getting creative, whether it is with simple and easy crafts and ideas, activities to make learning fun, or delicious recipes that you and your kids can cook together you'll find them all shared here on Rainy Day Mum.

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