Why Do Leaves Change Colour?

Improved Essays
Experience 3:
Leaf science: how to find the hidden colours Rationale:
To understand how leaves change colour and why they are green. This is aimed at moving Billy from pre-theoretical knowledge to sound scientific understanding of chlorophyll while understanding the world around him, in a visual way.

Materials:

Clear jars
Coffee filter paper
Pencils
Rubbing alcohol
A range of leaves, including autumn colours
10 sandwich bags
Labels
Gardening gloves
Rolling pin Curriculum Link:

NSW Science and technology syllabus
- A student describes external features, changes in and growth of living things ST1-10LW
Board of Studies, Teaching and Educational Standards NSW [BOSTES], 2015).

Australian curriculum:
- Science / Year 1 / Science Understanding
…show more content…
How about this leaf? (Holding up a different coloured leaf). Do not comment on the responses, just read “Why leaves change colour by Betsy Maestro”. When done engage in a group discussion centred around the question “Why do leaves change colour?”

Method:
• Cut leaves into small pieces and place in a clear jar
• Pour in just enough rubbing alcohol to cover the bottom of the jar
• Mash the leaves up in the alcohol with a wooden spoon or tip of a rolling pin.
• Leave it sit for 30 minutes. Placing it in hot water to speed up the process.
• Drain out the leaves leaving the coloured water.
• Cut filters into strips slightly longer than the jar itself and place in the jar
• Leave it for about an hour and watch as the colour pigments in the leaf separate to reveal the hidden colours
Integrated Experiences:

Health: Discuss what the digestive system does and how it is similar to the photosynthesis process

Creative Arts: Have children add pressed flowers and leaf rubbings to their
…show more content…
(Adapted from Lee, 2013; CISE, n.d.)
Experience 4:
Busy bees: Pollination Rationale:
Billy’s preconception of “nectar keeping flowers alive” and that bees visit flowers, will be extended by this activity.
Materials:

Flower cut outs
Cup cake holders
Assortment of coloured glitter
Glue
Cotton balls
Bumble bee cut out
Paddle pop sticks

Curriculum Link:

NSW Science and technology syllabus
- A student describes external features, changes in and growth of living things ST1-10LW
Board of Studies, Teaching and Educational Standards NSW [BOSTES], 2015).

Australian curriculum:
- Science / Year 1 / Science Inquiry Skills / Processing and analysing data and information / ACSIS212: Through discussion, compare observations with predictions
- Science / Year 1 / Science Inquiry Skills / Communicating / ACSIS029: Represent and communicate observations and ideas in a variety of ways such as oral and written language, drawing and role play
(ACARA, 2015)

Vocabulary:
Pollination
Nectar
Germinate
Flower
Insects
Pollen
Life cycle

Science concepts:

• Plants have different parts each with special functions
• Pollination

Related Documents

  • Improved Essays

    [ ] In clip one, the children are engaged through discussion about their prior knowledge. For example, the children are asked what they already know about predictions and are able to learn from others through discussion. Then the children are given the opportunity to identify what they already know about predictions within a small group in clip two. My instruction linked the children’s development by providing opportunities for the children to use their prior knowledge of predictions and verbally communicate their understanding as well as record through writing on a chart within a small group. After the children identified their prior knowledge, I created a bridge to the new learning by building on their understanding through using a anchor chart with new ideas for the children to learn as well.…

    • 415 Words
    • 2 Pages
    Improved Essays
  • Superior Essays

    Dialogic Talk

    • 1000 Words
    • 4 Pages

    The national curriculum in England for Science (2014) intends that pupils should be able ‘to describe associated processes and key characteristics in common language using technical terminology accurately’ (Scholastic, 2013). Children are required to use discussion to work together to enhance their ideas and address any misconceptions they have. Earle and Serret (2015: 119) have put forward ways in which we as teachers can ‘…encourage children to participate in a science-based dialogue’. We must hook them into the lesson using a stimulus like a giant footprint (Earle and Serret, 2015). We must give children time to think and someone to talk to (Earle and Serret, 2015) using think, pair, share for example.…

    • 1000 Words
    • 4 Pages
    Superior Essays
  • Improved Essays

    6.03 Calorimetry Lab

    • 512 Words
    • 3 Pages

    Procedure: Part A: Extraction stage 1. Place a 125 mL separatory funnel in a ring stand equipped with a small ring. 2. Heat the hot plate. 3.…

    • 512 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    2.03 Lab Permeability

    • 1870 Words
    • 8 Pages

    Title: Alexandra Whitaker, Ms.Dayton, 12/23/16, 2.03 lab permeability Objective(s): The main purpose is to find out if plastic bags are permeable to starch and, or, iodine. Also, to find out wither potatoes are hypotonic, hypertonic, or isotonic by testing the different amounts of sucrose solutions Introduction: The necessary background information needed for this lab is the definition of osmosis, diffusion, active transports, passive transports, permeability, concentration, tonicity, and to now the scientific concepts of hypotonic, isotonic, and hypertonic. Hypothesis: For part 1 my hypothesis is: That the starch will diffuse across the plastic bag and react with the iodine and will have a color change to the water to imply the reaction…

    • 1870 Words
    • 8 Pages
    Great Essays
  • Improved Essays

    Preparing Dilutions of the Silver Nanoparticles 1. Gather all materials. 2. Put on a pair of disposable gloves. 3.…

    • 1087 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Learning Objective: After modeling for a class and practicing portioning shapes into two equal parts as a class, students would be able to portion circles and rectangles into two equal shares, with 80% accuracy. Applicable Common Core Learning Standard: CC.4. MD. 3 Apply the area and perimeter formulas for rectangles in real world and mathematical problems.…

    • 1012 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Focus student one showed a 70% accuracy when asked to identify and sort pictures of objects into conceptual categories, a 59% accuracy when asked to identify and match all upper and lower case letter with prompting, and a 75% accuracy when asked to retell the main ideas or important facts from a read aloud. Based on these scores, I plan to raise the accuracy percentage goal for identifying and sorting colors, maintain the percentage accuracy goal for identifying upper and lower case letters, and raise the accuracy percentage goal for retelling main ideas or important facts. In terms of learning goals, the focus student has a bilateral hearing loss, therefore his learning goal will be to use self-advocating skills to ask for help or repetition of a question. The areas of growth that will be focused on for the sequence of lessons are organization of objects into categories, letter identification, and sequencing.…

    • 674 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Cations Lab

    • 929 Words
    • 4 Pages

    Lingrui Ge Lab report October 18, 2015 Experiment #5 Separation and Qualitative Analysis of Cations CHEM 1315-088 Purpose of the experiment: To identify the substances that are present in a mixture. Materials: Test Solutions and Substances 6 M hydrochloric acid, HCl Sodium bismuthate, NaBiO3 (s) 6 M nitric acid, HNO3 0.1 M potassium thiocyanate, KSCN 6 M ammonia/ammonium hydroxide, NH3 3% hydrogen peroxide, H2O2 6 M sulfuric acid, H2SO4 Sodium bismuthate, NaBiO3 (s) 6 M sodium hydroxide, NaOH Cation Solutions 0.2 M silver nitrate, AgNO3 0.5 M lead (II) nitrate, Pb(NO3)2 0.2 M mercury (I) nitrate, Hg2(NO3)2 0.2 M iron (III) nitrate, Fe(NO3)3 0.2 M copper (II) nitrate, Cu(NO3)2 0.2 M manganese (II) nitrate, Mn(NO3)2 Equipment…

    • 929 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    M1 Iodin Research Paper

    • 1056 Words
    • 5 Pages

    P1 – Task 1, M1 – Task 2, M2 – Task 3 Iodine Extraction Equipment:  Goggles  Fume cupboard  2X 250cmᶾ beaker  Filter funnel  Filter paper  Separating funnel  Bunsen burner  Tripod  Gauze Method: 1. Set up the equipment with the Bunsen burner and tripod on the heatproof mat with the gauze on top of the tripod. 2. Add the seaweed to the tin lid and place on top of the gauze (try not to use any ‘pods’ of seaweed as they pop when heated which could be dangerous).…

    • 1056 Words
    • 5 Pages
    Improved Essays
  • Superior Essays

    Conclusion : The purpose of this experiment is to measure the effect of light intensity on the rate of photosynthesis in leaf discs. In this experiment, leaf disc is used and the CO2 gas inside the leaf discs are expelled in the beginning of experiment. Then, leaf discs are immersed in 3% Sodium Hydrogen Carbonate Solution.…

    • 3520 Words
    • 15 Pages
    Superior Essays
  • Improved Essays

    The purpose of assessments The National Early Childhood Assessment Resource Group summarized the purposes for appropriate uses of assessment in the early childhood years as follows: Purpose 1: Assessing to promote children’s learning and development; Purpose 2: Identifying children for health and social services; Purpose 3: Monitoring trends and evaluating programs and services Purpose 4: Assessing academic achievement to hold individual students, teachers, and schools accountable” Source: (Shepard, Kagan, Lynn, & Wurtz, 1998). (pg.3) Principles and Recommendations for Early Childhood Assessments All early childhood assessments involve a process of gathering information about children to better understand and support learning and development.…

    • 725 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    The Thermodynamics of Potassium Nitrate Dissolving in Water Introduction: This experiment focuses on thermodynamics or the study of heat and molecular randomness. It helps illustrate how and why potassium nitrate (KNO3) dissolves in water. When it dissolves, it dissociates into potassium (K+) and nitrate (NO3-) ions. These ions can also recombine into solid potassium nitrate. This reaction can reach a state where concentrations of ions remain constant or Ksp; which stands for the equilibrium concentration for the solubility product.…

    • 1221 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Leaf Disk Lab Report

    • 566 Words
    • 3 Pages

    Introduction: Leaf Disk float in water alone. When a solution consisting of a small amount of sodium bicarbonate is added to the water it causes the leaf disk to sink. As photosynthesis continues in the leaf disk it releases oxygen and causes the leaf disk to rise. While cellular respiration is occurring also the rate that the disk raise is an in implicit measurement of the net rate of photosynthesis. The independent variable in this lab is the solution and the light because it can be controlled.…

    • 566 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    Sugar Dissolving Lab

    • 1835 Words
    • 8 Pages

    PURPOSE/QUESTION The question that we will answer using this laboratory report is, “How is the rate of dissolving sugar affected by changing the temperature of the water, changing the rate of stirring, and changing the size of the crystal?” The independent variable of each laboratory experiment is different, however they are all being changed to get consistent and effective results for one dependent variable. The three independent variables are the temperature of water, rate of stirring and size of the crystal and the dependent variable of the all the experiments is the rate of sugar dissolving. HYPOTHESES Below are the laboratory experiment hypotheses that we have formed as a group to figure out what will happen to the rate of dissolving under…

    • 1835 Words
    • 8 Pages
    Great Essays
  • Improved Essays

    Throughout this assignment, I will be critically examining the teaching and learning of science throughout a series of lessons, based on materials, within a class of year one students. I will also be comparing the old and new national curriculum to identify the advantages and disadvantages for key changes which have taken place. As well as this , this essay will talk about the importance of science within the curriculum and how it is delivered in primary classrooms. Furthermore, I will be analysing the importance of teachers’ subject knowledge in Science and the way children learn by examining a range of theory and research findings.…

    • 914 Words
    • 4 Pages
    Improved Essays