Worksheet Grade 2 Art & Music

Cobbleford Park Fountain Tile Border: A Grade 2 Pattern Sheet

Students design a three-tile repeating border for a park bottle-filling fountain, then add and subtract within 100 to find out whether the tile order is enough.

Objectives

  1. Students will design a three-tile repeating unit and copy it along a row.
  2. Students will add and subtract two-digit tile counts within 100.
  3. Students will decide whether a supply of tiles covers a border and explain how they know.

Vocabulary

Key words: pattern, repeat, border, tile, fountain

Teacher overview

The town of Cobbleford is a made-up place putting a drinking fountain with a bottle-filling spout in its park, and the wall panel behind it gets a tile border along the top and down both sides. Students design the repeating three-tile unit first and then find out, by adding and subtracting, whether the crew ordered enough tiles to finish the job.

Print the sheet with a plain rectangle for the wall panel, three empty boxes for the pattern unit, and a row of eighteen small squares across the top of the panel. The arithmetic in items 3 through 8 stays within 100 on purpose, and item 7 is the one worth watching, because a border that needs 42 tiles cannot be built from 41 and students have to name the gap of one rather than treat the two numbers as close enough.

Answer Key

  1. Answer: Three colored boxes forming one unit. Any two or three colors are correct as long as the three boxes together make a unit a student could repeat, rather than three unrelated drawings.
  2. Answer: The top row repeats the unit. The eighteen squares should show the same three-box order over and over, starting again each time the third box is filled.
  3. Answer: 30 tiles. Add the top row and the left side: 18 + 12 = 30.
  4. Answer: 42 tiles. Add the right side to the previous total: 30 + 12 = 42. Accept students who add 18 + 12 + 12 in one line.
  5. Answer: 8 tiles. Take the border total from the order: 50 - 42 = 8.
  6. Answer: 41 tiles. Take the broken tiles from the order: 50 - 9 = 41.
  7. Answer: No. The border needs 42 tiles and only 41 are good, so the crew is 1 tile short.
    Accept any explanation that compares 41 with 42 and names the gap of one.
  8. Answer: 56 tiles. Add the new order to the good tiles: 41 + 15 = 56.
  9. Answer: A repeat is easy to follow. Accept any sentence saying that the crew can see what comes next, that they do not have to stop and decide each time, or that a mistake is easier to spot in a pattern.
  10. Answer: A refill spot saves buying bottles. Accept any reasonable reason, such as people getting a drink for free, reusing one bottle instead of throwing bottles away, or having water on a hot day.

Differentiation

Support

Give these students a top row with the first pattern unit already colored, so the repeat is started for them, and provide base-ten blocks for items 3 through 8. Rewrite item 7 as a two-step prompt on their copy, first asking how many tiles the border needs and then asking whether 41 is enough. Accept drawings as the work shown.

Extension

Ask these students to design a four-tile unit instead of three, decide whether it still fits the 18-tile top row evenly, and write one sentence explaining what happens at the end of the row when it does not. They can also add a bottom row of 18 tiles to the panel and rework items 4 through 8 with the larger border.

ELL supports

Show a real tiled surface in the building, such as a bathroom wall or a floor edge, and trace the repeat with a finger before the sheet is handed out. Put a small picture beside top, left, and right in the table so the three parts of the border are identifiable without reading. Accept sentences for items 9 and 10 in the home language, then add the English words pattern and repeat together.

Extensions

Cut the finished pattern units into strips and tape them end to end around a classroom doorway to see the repeat at full length, which makes the difference between 41 and 42 tiles physical rather than arithmetic. Classes that want a real audience can send the three strongest border designs to the parks department with a short cover note from the class about where a bottle-filling fountain would help most.