Έτοιμοι για δράση;
Σχετικό υλικό
Πόροι
Soil acid-meters, Hellige’s fluid, soil sampling shovels, soil sample container, water to rinse the measuring tools, notepad, writing utensils, drawings of selected fruits and vegetables with the soil pH values needed for the selected plant species, different types of fertilisers - lime fertiliser, animal fertiliser (e.g. horse or goat manure), dried or burnt plant residues, aprons to protect clothes
Προετοιμασία
Gather resources, source location such as an allotment and liaise with owners if required.
Στόχοι, μηνύματα, έννοιες
Συγεκεκριμένοι στόχοι
- To understand the role of fertiliser and the fertilisation process in agriculture.
- To carry out soil pH measurements before and after fertilising.
Συγκεκριμένα μηνύματα
- Fertilisation is an essential part of the food production process.
- Different types of fertilisers have different effects on the soil.
- Different plants require different types of fertilisers.
- 4. Farmers are responsible for using safe methods of fertilisation in agriculture.
Βασικοί όροι
- fertilisation
- food production
- micro and macro soil fauna
- pollinators
Πρακτικές και Δεξιότητες
Πρακτικές STEM
- Ανάλυση και ερμηνεία δεδομένων
- Αιτιολόγηση και σχεδιασμός λύσεων
- Τεκμηριωμένη υπεράσπιση επιχειρηματολογίας
- Άντληση, αξιολόγηση και επικοινωνία πληροφοριών
- Αξιοποίηση των μαθηματικών και της υπολογιστικής σκέψης
- Διατύπωση ερωτημάτων και προσδιορισμός προβλημάτων
- Προετοιμασία και διεξαγωγή έρευνας
Προσωπικές δεξιότητες
- Αντιμετώπιση της αβεβαιότητας
- Εκμάθηση μέσω της αποτυχίας στο πλαίσιο της εκπαίδευσης
- Ομαδικό πνεύμα και συνεργασία
Δεξιότητες διαχείρισης
- Προσχεδιασμός
- Αξιοποίηση πόρων
Δράση
step 1
Demonstration of how a soil acid meter works, what the meter is used for and how what the meter indicates translates into plant welfare.
step 2
Divide into subgroups. Go outdoors and take samples of soil from various areas, taking into account habitat diversity, such as sun exposure of the area, humidity, quantitative presence of trees, etc. Take measurements with an acid meter and record results. Identify the pH value of soil samples and collect them for further work.
step 3
Discuss types of fertilisers: natural, plant and mineral residues. Students will check the pH of individual fertilisers with the acid meter and indicate their impact on soil pH level. Students will also consider what will happen to the pH of the global samples taken as a result of using a particular fertiliser
step 4
Mix soil samples with fertilisers and once again measure the pH. Note down the pH values. Then assign these to drawings of fruit and vegetables and analyse how this would impact their growth.
step 5
Discuss the role of crop burning in fields and how it is perceived as a wasteful method of fertilisation.