Connections Pre-K Sampler

35 Using visual comparisons to determine length ComparingLength 84 ©MathTeachersPress, Inc.Reproductionbyanymeans isstrictly prohibited. Name ________________________________________________________________ Shortest to Longest r— shortest g— longest crayon Objective: To estimate and compare length using visual comparison and direct comparison of objects. Materials: Straws, crayons Vocabulary: longest, shortest Storytime: Inch by Inch, Lionni, Leo Reinforce: Oral ReviewPK-4 pattern of sizes Estimating LengthwithBody Parts Review themeaning of the length of body parts that might be useful inmeasuring how long something is (thumb, small finger or “pinky,” palm, hand span, forearm). Ask students to estimate and compare two of their body parts. Which is longer, your footprint or your hand span? Have students estimate then compare their hand span to the length of their foot. Repeat with 2 other comparisons. (e.g., a thumb to a little finger, a hand span to a forearm) Drawing Straws Display 3 ormore straws of uneven length. Discuss which straw is the shortest and ask students to explain their reasoning. Line up the straws evenly on the left to check the students’guesses. If awormwere to crawl from one end of the straw to the other end, onwhich strawwouldhe have to crawl the shortest distance?The longest? Put the straws in order from shortest to longest to demonstrate. Now let’s pretend that we’re playing a game andwe draw straws to decidewhowill get the first turn. The personwho selects the longest straw gets to go first. Hold the straws in your hand so the tops are even and the bottoms are hidden. Have 2 students select a straw. Have the class compare the straws and decidewho has the longest one. 1 Look at theworm, the snake, and the ant at the top of this page.Which one of these animals is longest? (the snake) Color the snake green.Which one of these animals is shortest? (the ant) Color the ant red. Let’s use green and red again for the next group of pictures. Point to the longest straw and color it green. Point to the shortest straw and color it red. Continue in the sameway for the pencils. Skill Builders 20-2 3 2 84 Unit 5 Pre-K PK-20 Measurement Sample StoryTime Activity Lesson 84 E - Inch by Inch, Lionni, Leo Summary: To keep from being eaten, an inchwormmeasures a robin’s tail, a flamingo’s neck, a toucan’s beak, a heron’s legs, and a nightingale’s song. Activity: Before reading the story, get some green yarn and cut a set of 3 pieces of yarn that are different lengths for each pair of students. After you have read the story, tell the students that some of the inchworm’s friends are having a problem. Since they can’t find the inchworm to help them, they can’t decidewhich of them is the longest andwhich of them is the shortest in their group of 3 friends. Pass out a bag of 3 pieces of yarn to each student pair. Have them