NATURAL SCIENCES: PLANNING & PREPARATION

NATURAL SCIENCES: PLANNING & PREPARATIONGRADE7TERM2KNOWLEDGE STRANDMATTER AND MATERIALSDATE: Week 11 – 18 May 2020Topic / Content /Concepts / Skills(WHAT I am going toteach/guide/support )CAPS: The Periodic Table ofElements:Some properties of Metals,nonmetals and semimetals / metalloidsTEACHERSTeaching Methodologies &Classroom Management(HOW I am going to teach/guide/support )Resources / LTSM(WHAT I am going to use toteach/guide/support )LESSON INTRODUCTION:What are metals, nonmetals and semi-metals / metalloids?First use prior knowledge to the learners to establish what they know. Thiswill help them to connect with what they will learn.In Grade 5, they have learned about the properties metals and nonmetals, and their uses. They have been introduced to the Periodic Table,a map of the elements in the previous lesson.Use various pictures to refresh their memory, for example; as shownAluminiumbelow:At the end of this lesson,learners should be able to: Identify metals, nonmetalsand semi-metals?Cast iron Identify where on theBrassperiodic table metals,nonmetals and metalloids/ semi-metals are located Explain why metalloids arelocated between themetals and nonmetals? Describe some propertiesof metals, nonmetals, andsemi-metals (physical andchemical)BronzeSteel Categorize a givenCopperelement as metal, Bring to class examples of items that learners can touch, feel andnonmetal, or semi-metalsdescribe that they use at home and school which will help them to Observe and label simpleunderstand the concepts for this lesson.elements as metals, To reinforce their prior knowledge, ask them how they would group ornonmetals, and semiorganize the items. Once the items are organized, ask them why theymetalsorganized the items the way they did.* Examples of metal, nonmetal,and semi-metals objects to test(e.g., iron, copper, aluminium, tin,iodine, charcoal, wood, plastic,glass) three electric wires, battery,light bulbs, plastic bags, hammer,safety goggles.*Optional are; multimeter orvoltage sensor*Colour pens or markers, pencil orpen, *Optional tape, index cards.*Sasol Inzalo/Siyavula Grade 7ATeacher guide pages 222 – 261ore-book chapter 9Links to Natural Sciences Siyavula& Natural Sciences WorkbooksNatural Sciences: Grade 7-9Workbooks:http://www.mstworkbooks.co.za/Natural Sciences:http://www.mstworkbooks.co.za/n1 P a geGET GRADE 7 DRAFT LESSON PLAN: THE PERIODIC TABLE SOME PROPERTIES OF METALS, NONMETALS AND SEMI-METALS -

Explain the state in whatmost nonmetals are foundat room temperature? Explain the uses of metals,nonmetals and semimetals. Design an investigation toidentify whether unknownsamples are metals,nonmetals, and semimetals Use the pictures and or available items again to remind the learnersabout ‘The properties and uses of metals and non-metals’ that they weretaught in Grade 5, using terms such as shiny, dull, hard, malleable, strong,brittle, ductile, conducts electricity, conducts heat, etc. Check how many learners can still remember the meaning of all thewords. Use science dictionaries and or the internet to find the meaning of thewords mentioned above. Learners should all be encouraged to readthem aloud, explain their meaning and use them in sentences (toaddress Language Across Curriculum (LAC). Brainstorm with the learners some everyday items that are made ofmetals nonmetals and semi-metals? Explain to the learners how Scientists organized the elements into thesethree groups: metals, nonmetals, and semi-metals in the periodic tablewith focus on the common properties of the elements which are placednear each other. PLEASE NOTE:In Grade 7, the Learnersare introduced to someproperties of metals, nonmetals, and semi-metals.They will learn more about Introduce and explain using examples some physical and chemicalproperties of metals, nonmetals, and semi-metals. Ensure that you definethese properties fromvarious terms. For example;Grade 8 and upwards.Physical property - a characteristic one can observe or measure withsense organs without changing the substance into another substance,Also note:e.g.; shiny, hardness, etc.Also note: Whether an element is a solid, liquid, or gas is also a physicalProvide the learners withproperty under certain conditions. For example, the temperature atcopies of the blankwhich a solid melts is a physical propertyperiodic table. They mustChemical property – a characteristic that may only be observed bycomplete and colour it inchemical reaction. An element’s chemical properties determine how theaccording to the metals,element combines with other elements, e.g.; during rusting (iron combinesnon-metals, and semiwith air / oxygen and moisture / water to form rust). Remind the learnersmetals which they canto identify where these two elements are found in the periodic table.reference whileOther examples includes tarnishing, etc.completing the lesson.Chemical reaction – a process by which one or more substances changeto produce one or more different substancesNote to explain: Chemical changes create new substances (e.g., rusting),while physical changes does not (e.g., boiling).NOTE: For Grade 7, they will learn the basic Physical Properties of metals,non-metals, and semi-metals. They will learn more about these propertiesin the higher grades. The following are the basics that they should learn.atural-sciences /naturalsciences.htmlNatural r.htmlNatural Sciences: Grade 7(https://www.siyavula.com/read/science/grade-7The Periodic Table of elementsRead the introduction, pages 232–254 Siyavula learner Workbook.Watch the YouTube videos in theblocks “Visit” and read the newwords. Write all the new wordsdown in your book.Properties of metals, semi-metalsand non-metalsRead the instructions and do theactivities on page 239 to 244 onproperties of metals and nonmetals.Do the activity on pages 244 to246 on element X. Read pages 245to 246 on semi-metals.Complete activity: the regions ofthe Periodic Table on page 247and 248. You need a copy of aPeriodic Table to do this activity.Read page 248 and answer thequestions that follow by readingand doing some research. anPractical Task / Investigationactivity:Complete as indicated on theworksheet.Summary2 P a geGET GRADE 7 DRAFT LESSON PLAN: THE PERIODIC TABLE SOME PROPERTIES OF METALS, NONMETALS AND SEMI-METALS -

Remember: ensure that the learners understand the meaning of everyword:Properties of MetalsProperties of Non-metalsProperties of Semi-metals ShinyLustrousMalleableDuctileHardConducts electricityConducts heatUsually a solidMostly solid at roomtemperature Dull appearanceBrittlePoor conductors ofelectricityPoor conductors of heatCan be solid/liquid/gas atroom temperatureUsually less dense,compared to metalsNot malleable or ductile Often malleableOften ductileMake goodsemiconductorsUsually a solid at roomtemperatureDull or shinyUsually conduct heatand electricity, thoughnot as well as metals Hold up a metal object and a nonmetal object. Ask the learners to listdifferences between the two objects based on their properties. Hold up two metal objects. Ask learners to list similarities between thetwo objects Explain how to use physical properties to classify and compare asubstance as a metal, nonmetal and semi-metals.ActivityUse the Periodic Table to show and explain the location of these threemajor groups of elements, namely:o Metals - elements on the left side of table except Hydrogen.o Nonmetals - elements on the right side of the table.o Semi-metals - elements along each side of the zig-zag line, alongthe border of the metals and nonmetals.Read through the summary onpage 251 and make some notesof important information andwords.Complete the content map onpage 252 and then the revisionexercise on page 253 to 254.The glossary on page 255 to 258has important words and theirmeaning. See that you understandall words as well as the ones thatyou wrote down in your book.*A game to learn about thePeriodic Table(http://bit.ly/15QkMHn)*These websites of the PeriodicTable highlight some of the uses ofthe elements:(http://bit.ly/1euHmVi) and(http://bit.ly/17zr35Q)*Periodic Table chart (preferablyPictorial one for this level)*Blank Periodic Table (to workfrom)MetalsNon-metalsSemi-metalsProvide the learners with a blank copy of the periodic table to colour andlabel like the one above to classify elements as a metals, non-metals andsemi-metals.In addition, they should add to their blank periodic table the symbols ofall the elements classified as a metals, non-metals and semi-metals.3 P a geGET GRADE 7 DRAFT LESSON PLAN: THE PERIODIC TABLE SOME PROPERTIES OF METALS, NONMETALS AND SEMI-METALS -

Practical Task / Investigation activity:Investigate the physical properties of metals, nonmetals, and semi-metals.Use the worksheet provided to investigate these properties, for example,conductivity of the materials by using electric tester (an electric circuitmade by using cell, bulb & electric wire, etc.)Extension activities:Identify everyday uses of metals, non-metals and semi-metals; e.g., in TVsets, computers, mobile phones, household items, jewellery, food industry,agriculture, medicine, Investigate if any of metals, non-metals and semi-metals pose anydangers through their use and how such dangers can be prevented. Please follow the instructions with your child in the section LEARNER’S ACTIVITIES. Help him/her to open the Sasol/Siyavula e-book, chapter 9 and let he/she do the activities. All videos and questions are online as well as the answers. At the end of this two-week lesson, your child must be able to answer the questions as stated under theTEACHERS section. Ensure that your child completes:o All the revision exercises at the end of each sub-section. The answers can be checked by clickingon the blue “show answer” block, but first let he/she try to complete it by themselves.o The Worksheet Activitieso The Assignment. Support your child to identify a list of examples of household items that contain a metal, nonmetal,and semi-metals.Periodic Tables (page 3 or 233Siyavula learner Workbook) s to: Science journal / Workbook/writing pad, pencils, Laptop /tablets / smart phones Data ASSIGNMENT QUESTIONSIdentifying the household and items that we use in everyday life that contain a metal, non-metal, and semi-metal from your surroundings.1. Name five metals & five nonmetals which we use in our daily life.2. Use a blank copy of the periodic table to shade in, classify and label the elements as metal, nonmetal and semi-metals based ontheir location on the Periodic Table.3. Explain which category contains the most (biggest number of) elements: metals, non-metals or semi-metals?4. Give four physical properties for each category –metal, non-metal and semi-metals.o Revision exercises at the end of each sub-section of the Siyavula Learner Workbooko Worksheet Activitieso The Assignmento Conduct an investigation / practical task, collect valid data, analyse and draw conclusions4 P a geGET GRADE 7 DRAFT LESSON PLAN: THE PERIODIC TABLE SOME PROPERTIES OF METALS, NONMETALS AND SEMI-METALS -