العلوم (بالإنجليزية) الصف الخامس الابتدائي، الأسبوع 20: Use wisely, protect, repair

From nature to my backpack, and using resources wisely

الأسبوع 20 · المحور الثالث «حماية كوكبنا»، الوحدة الثالثة «الموارد الموجودة على سطح الأرض»، المفهوم 3.3 «حماية الموارد الموجودة على سطح الأرض» (أ): الموارد الطبيعية واستخدامها بحكمة · 3 دروس

Use wisely, protect, repair

Discovery Education Science P5: Term 2, Unit 3, pp. 64–66

GoalTell conservation, preservation, restoration and sustainability apart, and choose ways to protect resources.

New words

conservation · using resources wisely so they lastpreservation · protecting a place so it stays as it isrestoration · helping a damaged place to recoversustainability · meeting today’s needs without spoiling the future

Explanation

There are several ways to protect resources. Conservation means using less and wasting nothing, for example turning off a tap and reusing paper. Preservation means keeping a special place as it is. Ras Mohammed in Sinai is a protected area where coral reefs and sea life are kept safe. Restoration means helping a damaged place recover, such as planting trees where a forest was cut. Sustainability means meeting today’s needs without spoiling the future. Reducing, reusing and recycling are three habits that help. Everyone can do something, and people can argue from evidence about the best choice for a place. Good choices think about water, air, soil, living things and other people.

Idea	Example
conservation	turn off the tap
preservation	a protected reef
restoration	plant trees again

Worked examples

Action	Idea
using both sides of the paper	conservation
making a nature reserve with no building	preservation
planting palms along a bare road	restoration

Match each action to its idea.

30 pupils→× 2 sheets = 60 a day→× 5 days = 300

A class of 30 pupils each saves 2 sheets of paper a day. Together they save 30 × 2 = 60 sheets a day, and 60 × 5 = 300 sheets in a 5-day week.

Habit	Example
reduce	use a cloth bag
reuse	refill a bottle
recycle	send old paper to be remade

Reduce, reuse, recycle: three habits that spare resources.

Class activity

School plan (a grown-up helps). Choose one resource, such as water or paper, at your school. Count how it is used for one day, then write three ways to waste less. Decide how you will check whether your plan works next week.

Practice

What is the difference between conservation and preservation?

Planting trees where a forest was cut is which idea?

12 pupils each save 3 sheets of paper. How many sheets do they save?

Give one way your family can use water wisely.