Lesson Notes By Weeks and Term v4 - JHS 2
AGRICULTURAL TOOLS
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AGRICULTURAL TOOLS
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Subject: Science
Class: JHS 2
Term: 3rd Term
Week: 3
Grade code: B8.4.5.1.2
Strand code: 4
Sub-strand code: 5
Content standard code: B8.4.5.1
Indicator code: B8.4.5.1.2
Theme: FORCES AND ENERGY
Subtheme: AGRICULTURAL TOOLS
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Agricultural tools are simple machines and devices that help farmers and gardeners do work faster, safer and with less effort. In Ghana, many homes and schools have gardens, and many communities depend on farming for food and income. Knowing the correct tool for a task and how to use it properly helps learners to: reduce injuries (cuts, blisters, back pain), protect crops and soil, save time and labour, increase yield and keep the environment clean. This lesson focuses on engaging in the use of basic and simple agricultural tools—explaining their uses, practising how to use them, and selecting the right tool for specific tasks (Indicator: B8.4.5.1.2).
2.1 Meaning of Agricultural Tools Agricultural tools are simple implements used to perform farming activities such as land preparation, planting, weeding, watering, harvesting and transporting materials.
They make work easier by applying ideas from Forces and Energy: Force: a push or pull used to move, cut, dig, lift or break soil. Tools help us apply force more effectively (e.g., a hoe concentrates force at its blade to break soil). Some tools are simple machines (e.g., wheelbarrow acts like a lever and wheel-and-axle).
2.2 Categories of Basic Agricultural Tools (with uses) A. Land Preparation Tools Hoe Use: digging, loosening soil, making ridges/mounds, weeding. Why it works: the blade concentrates your force into the soil to break it. Correct use: hold firmly with two hands; swing with controlled force; avoid hitting stones. Cutlass (Machete) Use: clearing bushes, cutting weeds, harvesting some crops (e.g., sugarcane), cutting stakes. Safety: always cut away from your body; keep distance from others; use a sheath. Spade Use: digging, turning soil, making planting holes, moving soil/manure. Difference from shovel: spade has a flatter, stronger blade for digging; shovel is more for scooping. Shovel Use: scooping and moving loose materials like sand, compost, manure. B. Planting and Nursery Tools Dibber (Planting stick) Use: making holes for seeds/seedlings (e.g., maize, pepper seedlings). Advantage: gives uniform depth and spacing. Hand trowel Use: transplanting seedlings, small digging around plants, applying manure near roots. C. Weeding and Soil Finishing Tools Rake Use: gathering leaves/weeds, levelling soil, breaking small clods after hoeing. Good practice: pull towards you gently; do not use it to hit hard stones. Hand fork Use: loosening soil around small plants without damaging roots. D. Watering and Spraying Tools Watering can Use: watering seedlings gently (especially in nursery beds). Tip: use the rose (sprinkler head) to avoid washing away soil. Knapsack sprayer Use: applying pesticides, herbicides or foliar fertiliser. Safety: wear gloves/mask; spray downwind; do not eat/drink while spraying; wash after use. E. Harvesting Tools Sickle Use: harvesting rice, wheat, grasses; cutting fodder. Safety: keep blade away from fingers; cut in a controlled motion. Harvesting knife Use: harvesting vegetables, cassava stems, fruits (depending on type). F. Transport and Carrying Tools Wheelbarrow Use: transporting soil, manure, harvested produce, water containers. Science link: reduces effort by using the wheel and handles (lever + wheel-and-axle). Head pan / basket Use: carrying harvested produce, soil, compost (short distances).
2.3 Selecting the Right Tool for the Right Task (Decision Rules) To choose an appropriate tool, consider: Nature of task: cutting, digging, scooping, levelling, watering, spraying, transporting. Soil condition: hard soil may need hoe/spade; loose soil may need shovel/rake. Crop stage: seedlings need gentle tools (trowel, watering can); mature crops may need cutlass/sickle. Safety and precision: use hand tools near delicate plants; use sharp tools carefully. Efficiency: wheelbarrow for heavy loads; rake for gathering and levelling.