Guro Ako - Teacher Talks



Lesson 1 : Visualizing Numbers up to 10 000 000 with emphasis on numbers 100 001 – 10 000 000Week 1Objective: Visualize numbers up to 10 000 000 with emphasis on numbers 100 001 – 10 000 000Value Focus : Care for the EnvironmentPrerequisite Concepts and SkillsVisualizing numbers from 100 001 – 10 000 000Associating numbers with sets having 100 001 – 10 000 000 objectsMaterials: Cut-outs or number discsReferences: K-12 Grade 5 Curriculum M5NS-Ia-1.5, Grade 4 TG and LMInstructional Procedure:Preliminary ActivitiesDrillHave a drill on visualizing numbers 100 001 – 10 000 000. Pupils can be asked to use cut-out of number disc to show numbers 100 001 – 10 000 000.Example. Using your cut-outs of number discs, show these numbers:190 456b. 3 345 890c. 15 890 300ReviewConduct a review on associating numbers with sets having 100 001 – 10 000 000 objects.MotivationHave you ever joined a tree-planting activity in your school? Or did you ever plant tree seedlings in your backyard. Why do you think it is important to plant trees?Developmental ActivitiesPresentationPresent this situation to the class.The Boy Scouts from different schools in Laguna joined a Tree Planting activity. There were123 121 trees planted in all. Do you know how big 123 121 is?Performing the activitiesGroup WorkGroup the pupils into 5 teams. Distribute cutouts of number discs to the teams. Let the pupils use cutout of number discs to visualize 123 121.Guide Questions:How many 100 000s discs did you use?How many 10 000s discs?How many 1000s discs?How many 100s discs?How many 10s discs?How many 1s discs?Expected answer:1 00011010010 000100 00010 000101 0001 000Processing the activitiesAfter all the groups have presented their answers, look back at the given example.Ask: How many 100 000 do we have? 1One 100 000s disc equals to how many? ( 100 000)How many 10 000 discs do we have? ( 2 )Two 10 000s discs equal how many? ( 20 000 )How many 1000s? (3)Three 1000s discs equal 3000.How many 100s? ( 1)One 100s disc equals 100How many 10s? ( 2)Two 10s discs equal 20How many 1s disc?One 1s disc equals to 1Say : “ 123 121 means 1 hundred thousands, 2 ten thousands, 3 thousands, 1 hundreds, 2 tens and 1 ones.Ask: Which group/s was/ were able to give all correct answers?Which group/s missed an answer? Which group/s was/were not able to give any correct answer?Provide immediate feedback / remedial measures to those with incorrect answers.Ask: How did you find the activity? Did you work cooperatively with your group?Was using number discs helpful to you in visualizing numbers 100 000 to 10 000 000?Give other examples for Pair Work Distribute cutouts of number discs ( 10 000 000s, 1 000 000s, 100 000s, 10 000s, 1000s, 100s, 10s, 1s). This time pupils work in pairs. Have them visualize the following. Then later, askthe groups to show their answers.12 987 789 b. 3 967 765 c. 34 267d. 567 452e. 2 345 678Do the same processing with the other examples done by the pairs.Reinforcing the Concept and SkillDiscuss the presentation on top of page ___ LM Math Grade 5.Then give the following activity.Using your number discs, show these numbers.13 450 123 2. 14 445 223 3. 567 789 4. 678 900 5. 567 908Have the pupils do the items under Get Moving, page 1 of LM math Grade 5. Check the pupils’ answers and provide corrective measures if needed.To further reinforce the skill, ask the pupils to answer items under Keep Moving, page 2 of LM Math Grade 5.Summarizing the Lesson To visualize numbers from 100,001 to 10 000 000 we use number discs such as 10 000 000s, 1 000 000s, 100 000s, 10 000s, 1 000s, 100s, 10s and 1s.Applying to New and Other SituationsUse number discs to show these numbers.There are 678 000 people at the GrandstandAbout 14 000 000 people voted in favour of Leni Robredo.Draw number discs to show these numbers.The Foundation donated 987 456 assorted canned goods to the earthquake victims.Have the pupils do the items under Apply Your Skills on page ___ LM Math Grade 5AssessmentDraw number discs to show these numbers.345 678The farmers harvested a total of 567 234 kilograms of rambutan in one harvest season.There were 3 478 290 people who joined the Save the Planet Earth movement.About 12 390 234 baby clothes are produced by a factory in 5 years.Home ActivityRemediationDraw number discs to show these numbers.456 789 2. 3 456 678 3. 34 123 127 4. 67 890 780 5. 789 561EnrichmentWrite the numbers for the following:7 ten millions, 5 millions, 6 hundred thousands, ten thousands, 4 thousands, 3 hundreds, 2 tens and 5 ones.3 millions, 4 hundred thousands, 3 ten thousands, 5 thousands, 2 hundreds, 6 tens, 4 ones.8 ten millions, 1millions, 3 hundred thousands, 4 ten thousands, 6 thousands, 2 hundreds, 5 tens and 3 ones.9 hundred thousands, 8 ten thousands, 4 thousands, 2 hundreds, 9 tens and 6 ones7 ten thousands, 9 thousands, 3 hundreds, 5 tens and 2 ones. ................
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