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  • Plant Needs - biology, chemistry and physics for 11-14 students

Plant Needs - biology, chemistry and physics for 11-14 students

This collection of resources for 11-14 students uses the topic of plants to address important scientific ideas in biology, chemistry and physics.

While investigating how plants have evolved to grow and flourish in many different environments, the students can cover topics about atoms, elements and compounds, energy, and the particle model.  

The resources involve a mixture of independent investigations, engaging and hands-on practicals, and activities to identify misconceptions and strengthen understanding. Teachers can opt to include as many or as few of the resources from the collection as they like.  


Studying the needs of plants can bring together important scientific ideas in biology, chemistry and physics. 

To grow healthily a plant needs air, water, nutrients, light and warmth. These are needed for the vast numbers of chemical reactions that happen as a plant grows.

 

Matter

Air, water and nutrients are the starting point for the chemical reactions that happen to ‘build’ a plant. They are all forms of matter. Matter is anything that has mass, in other words, can be weighed.

Energy

Light and warmth are about transferring energy. Light is one way that energy can be transferred from place to place. Warming and cooling are two of the effects than may happen when energy is transferred. Energy does not have mass, but it can be quantified. So we can talk about amounts of energy.

This group of activities is about what plants need to grow healthily:

  • Plants, matter and energy
  • Plant reactions
  • Plant nutrients
  • Making and testing plant nutrients
  • Homemade fertilisers

 

These are summarised by statements in the National curriculum for science in England at key stage 3:

In biology pupils should be taught about Nutrition and digestion, which includes:

  • plants making carbohydrates in their leaves by photosynthesis and gaining mineral nutrients and water from the soil via their roots

 

In chemistry pupils should be taught about the Particulate nature of matter and about Atoms, elements and compounds. This includes:

  • the properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure
  • changes of state in terms of the particle model
  • a simple (Dalton) atomic model
  • differences between atoms, elements and compounds 

 

In physics pupils should be taught about Changes in systems and about the Particle model. This includes:

  • energy as a quantity that can be quantified and calculated; the total energy has the same value before and after a change
  • comparing the starting with the final conditions of a system and describing increases and decreases in the amounts of energy associated with movements, temperatures, changes in positions in a field, in elastic distortions and in chemical compositions
  • the differences in arrangements, in motion and in closeness of particles explaining changes of state, shape and density, the anomaly of ice-water transition

 

The activities also provide an opportunity to tackle some of the common misconceptions, including

  • Particles are the same, for example, as grains of sugar and flecks of dust.
  • There is air between particles
  • Particles expand on heating
  • When ice is heated its particles melt
  • Particles in a liquid are smaller than in a solid.
Tags: 11 -14 (KS3), Photosynthesis, Plant cells and tissues, Plant growth, health and reproduction, Energy stores and transfers, Physical changes, Particulate nature of matter, Atoms, molecules and ions, Elements, compounds and mixtures, Chemical reactions, Practical, Stretch and challenge, Activity

Download Resources

  • SAPS - 0 Plant Needs - Teacher's Overview
  • SAPS - 1 Plants, matter and energy - Student Sheet
  • SAPS - 1 Plants, matter and energy - Teaching and Technical Notes
  • SAPS - 2 Plant Reactions - Teaching and Technical Notes
  • SAPS - 2 Plant reactions - Student Sheet
  • SAPS - 3 Plant nutrients - Student Sheet
  • SAPS - 3 Plant nutrients - Teaching and Technical Notes
  • SAPS - 4 Making and testing nutrients - Student Sheet
  • SAPS - 4 Making and testing nutrients - Teaching and Technical Notes
  • SAPS - 5 Homemade fertilisers - Student Sheet
  • SAPS - 5 Homemade fertilisers - Teaching and Technical Notes
  • SAPS - 6 Growing plants - Teaching and Technical Notes
  • SAPS - 6a Growing plants - soil culture - Student Sheet
  • SAPS - 6b Growing plants - water culture - Student Sheet
  • SAPS - 6c Growing plants - floating culture - Student Sheet

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  • Seed Dispersal - physics and biology at Key Stage 3
  • Plants and Science for 11-14 Year Olds
  • Ins and Outs of Water - biology, chemistry and physics for 11-14 students
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