graphic organizer. A visual framework that helpsthe learner organize ideas and make connectionsbetween them. Graphic organizers can be preparedby the teacher or by students. Graphic organizersinclude, for example, mind maps, T-charts, flowcharts, and Venn diagrams.guided mathematics. An instructionalapproach in which the teacher guides studentsthrough or models a mathematical skill or concept.Instruction is planned, yet flexible enoughto capitalize on alternative ideas and strategiesprovided by students. See also independentmathematics and shared mathematics.holistic evaluation. Judgement about theoverall quality of a piece of work, rather thanan analysis and scoring of individual parts ofthe work. A rubric is often used to evaluate apiece of work holistically.homework. Out-of-class tasks assigned to studentsto prepare them for classroom work or to havethem practise or extend classroom work. Effectivehomework engages students in interesting andmeaningful activities.horizontal format. A left-to-right arrangement(e.g., of addends), often used in presentingcomputation questions. See also vertical format.23+48Horizontal formathundreds chart. A 10 x 10 table or chart witheach cell containing a natural number from 1 to100 arranged in order. The hundreds chart allowsstudents to explore number patterns and relationships.identity rule. In addition, the notion thatthe sum of 0 and any number is that number(e.g., 0+4=4). In multiplication, the notion thata number multiplied by 1 equals that number(e.g., 4 x 1=4).independent mathematics. An instructionalapproach in which students work alone to focuson and consolidate their own understanding,and learn to communicate this understandingindependently. Students who are workingindependently should know that they canrequest assistance when they need it.interview. An assessment strategy usuallyinvolving a planned sequence of questions posedto an individual student. It provides informationabout a student’s thinking processes.inverse operations. The opposite effects ofaddition and subtraction, and of multiplication anddivision. Addition involves joining sets; subtractioninvolves separating a quantity into sets. Multiplicationrefers to joining sets of equal amounts; divisionis the separation of an amount into equal sets.investigation. An instructional activity in whichstudents pursue a problem or an exploration.Investigations help students develop problemsolvingskills, learn new concepts, and apply anddeepen their understanding of previously learnedconcepts and skills.join problem. A problem that involves the actionof increasing an amount by adding another amountto it. A join problem involves a start amount, achange amount, and a result amount. Any ofthese amounts can be unknown in a join problem.journal. (Also called “learning log”.) A collectionof written reflections by students about learningexperiences. In journals, students can describelearning activities, explain solutions to problems,respond to open-ended questions, report oninvestigations, and express their own ideasand feelings.kinaesthetic learner. (Also called “tactilelearner”.) One who learns best through physicalmovement and the manipulation of concrete94 A Guide to Effective Instruction in Mathematics, Kindergarten to Grade 6 – Volume One
materials. Learning activities that involve dramatization,the construction of concrete mathematicalmodels, and the use of manipulatives helpkinaesthetic learners understand mathematicalconcepts.learning log. See journal.learning styles. Different ways of learning andprocessing information. For instance, visual learnersneed to see visual representations of concepts.Auditory learners learn best through verbalinstructions and discussions, by talking thingsthrough and listening to what others have to say.Tactile/kinaesthetic learners learn best through ahands-on approach, actively exploring the physicalworld around them.level of achievement. See achievement level.magnitude. The size of a number or a quantity.Movement forward or backwards, for example,on a number line, a clock, or a scale results inan increase or decrease in number magnitude.making tens. A strategy by which numbers arecombined to make groups of 10. Students canshow that 24 is the same as two groups of 10 plus4 by placing 24 counters on ten frames. Makingtens is a helpful strategy in learning addition facts.For example, if a student knows that 7+3=10,then the student can surmise that 7+5 equals 2more than 10, or 12. As well, making tens is auseful strategy for adding a series of numbers(e.g., in adding 4+7+6+2+3, find combinationsof 10 first [4+6, 7+3] and then add anyremaining numbers).manipulatives. (Also called “concrete materials”.)Objects that students handle and use in constructingtheir own understanding of mathematical conceptsand skills and in illustrating that understanding.Some examples are base ten blocks, interlockingor connecting cubes, construction kits, numbercubes (dice), games, geoboards, hundreds charts,measuring tapes, Miras (red plastic transparenttools), number lines, pattern blocks, spinners, andcolour tiles.mathematical concepts. A connection of mathematicalideas that provides a deep understandingof mathematics. Students develop their understandingof mathematical concepts through richproblem-solving experiences.mathematical model. (Also called “model” or“representation”.) Representation of a mathematicalconcept using manipulatives, a diagram or picture,symbols, or real-world contexts or situations.Mathematical models can make math conceptseasier to understand.mathematical pedagogical knowledge. Anunderstanding of how students learn mathematics,and a foundation of effective strategies for teachingmathematics.mathematical procedures. (Also called“procedures”.) The operations, mechanics, algorithms,and calculations used to solve problems.mathematical sense. The ability to makemeaningful connections between mathematicalideas, and between mathematical ideas and thereal world.mathematical skills. Procedures for doingmathematics. Examples of mathematical skillsinclude performing paper-and-pencil calculations,using a ruler to measure length, and constructinga bar graph.mathematizing. Reflecting on and interpretingmathematical ideas to make sense of them. Also,recognizing and interpreting mathematics in reallifesituations.math forum. An instructional strategy by whichstudents share work and ideas with other students.Students gather at a designated location inthe classroom to explain solutions to problems,tell problems they have created, or explain anddemonstrate what they have learned.Glossary 95
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- Page 119 and 120: Payne, J.N. (Ed.). (1990). Mathemat