Inspired by nature | KS2 | Year 4 | Maths

Investigations & Problem-solving: Turtle eggs

1 - Learning Objective

Learning Objective

We are learning how to solve a natural world problem by using and applying our skills and knowledge of numberĀ (including addition of 3-digit numbers).

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Credit: BBC Four - Nature's Turtle Nursery: Secrets of the Nest

Clip Description

Turtles have been swimming in the seas and oceans of the world for more than 100 million years, having once lived alongside the dinosaurs. There are seven different species of marine turtle, and they vary greatly in size. The largest is the leatherback turtle. It can reach 180 centimetres in length and weigh 500 kilograms. (The average weight of an adult human is 62 kilograms). By contrast, the smallest marine turtle, Kemp’s ridley, is just 70 centimetres long and over ten times lighter than the leatherback.

In this fascinating clip, we see the Great Turtle Arribada. During this extraordinary event, thousands of female olive ridley turtles emerge from the ocean at the same time. On the beach, the turtles dig holes with their flippers into which they lay between 100 and 120 eggs. The eggs are then covered with sand before the turtles return to the sea. They will do this two or three times in a single breeding season.

Whiteboard Number Challenge

Can you name 3 things that are approximately the same length as a fully grown leatherback turtle?

Can you name 3 things that are approximately the same length as a Kemp’s ridley turtle?