Mushrooms School
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Mushroom Maths
Lesson 3

Weighing Your Harvest

Mushroom Maths▾
  1. 1Counting Mushrooms
    1. Counting Mushrooms7 min
  2. 2Measuring With a Ruler
    1. Measuring With a Ruler7 min
  3. 3Weighing Your Harvest
    1. Weighing Your Harvest7 min
  4. 4A Growing Chart
    1. A Growing Chart8 min
The video for this lesson is being prepared.

How heavy is your harvest?

Harvest day is here! Your mushrooms are big and ready. Now for some fun maths. Let us find out how heavy they are.

We measure how heavy things are with a scale. A kitchen scale is a little machine that shows a number when you put something on it. That number is the weight.

Wash your hands. Then ask a grown-up to help you harvest and weigh.

Grams and how they work

Weight is often measured in grams. We write it as g for short.

A gram is very light. One raisin weighs about one gram. A big handful of mushrooms might weigh 100 grams or more!

When the scale shows a bigger number, your harvest is heavier. Simple!

Let us weigh

Here is how to weigh your mushrooms:

  1. A grown-up twists the cluster off the block.

  2. Put a bowl on the scale.

  3. Press the zero button so the bowl does not count. This is called taring.

  4. Pop the mushrooms in the bowl.

  5. Read the number. That is your harvest weight!

A small kit often gives about 50 to 160 grams on the first harvest. A bigger kit can give even more.

Adding up your harvests

Here is a secret. Many kits grow more than once! You might harvest two or three times.

So you can add your weights together. Say you weigh:

  • First harvest: 100 g

  • Second harvest: 60 g

Add them up:

100 + 60 = 160 grams in all!

Write each weight down. At the end you will know your grand total.

Remember the golden rules. Oyster mushrooms must always be cooked by a grown-up, never eaten raw. And never weigh or eat a wild mushroom. Your kit is a safe, known kind. That is why we can grow, weigh, and cook it. Well done, super weigher!

Quick quiz

Answer every question, then check how you did. You can try as often as you like — your score is just for you.

1.What do we use to find out how heavy something is?
2.Why do we press zero (tare) before adding the mushrooms?
3.First harvest is 100 g and second is 60 g. What is the total?
4.How should you eat your kit oyster mushrooms?

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Related grow kits

These optional kits are sold in our external webshop. Learning here stays free. A grown-up handles orders and follows the kit instructions.