Quarter 2 Week 10WednesdayDay 48 of 180

Week 10, Wednesday: Practice mixed mental math with 10 and 100 more · Compare the purpose of an informational text

Day 48 · 3 lessons · 140 min

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Math

Students practice mixed mental math with 10 and 100 more and less, including cases that cross a hundred (2.NBT.B.8).

Done

Remember?

3 quick questions from earlier weeks · about 3 minutes

11 − 8 = ? Facts to 20
323 + 265 = ? Week 9
15 + 39 = ? Week 7

Standards Addressed

2.NBT.B.8

Activities

10 min

Warm-Up

Flash 10 index cards each showing a number and an arrow (up arrow means 10 more, down arrow 10 less, double up arrow 100 more, double down arrow 100 less): for example 463 up, 290 up, 805 down, 312 double up, 750 double down. Your child answers in under 3 seconds each.

index cardspencil

15 min

Mini-Lesson

Focus on the crossing cases. Write 695 + 10 (705), 703 - 10 (693), 907 + 100 (not possible under 1000, so skip to 900 + 100 = 1000), 105 - 100 (5). Draw each with base-ten pictures so your child sees the 10 sticks becoming a square or the square breaking into sticks.

paperpencil

15 min

Practice

Four-corner puzzle: write a number in the middle of a paper (for example 548). Your child writes 10 more above, 10 less below, 100 more to the right, 100 less to the left (558, 538, 648, 448). Repeat for 397, 605, 190, 999 (only 10 less and 100 less for 999), and 250. Support: keep the hundreds chart nearby for the tens. Stretch: add corners for 20 more and 200 more.

paperpencilprinted hundreds chart

5 min

Wrap-Up

Your child teaches you the rule in their own words: 'Ten changes the tens place, one hundred changes the hundreds place, unless the tens digit is 9.'

Materials Needed

index cardspencilpaperprinted hundreds chart

Related Resources

Math Worksheets (Weeks 9-12)Math Answer Key (Weeks 9-12)

English Language Arts

Students compare the purpose of an informational text with the purpose of a story on the same subject and gather facts from a second source (RI.2.6, W.2.7, W.2.8).

Done

Remember?

3 quick questions from earlier weeks · about 3 minutes

What text feature tells you what a picture shows? Week 9
What does 'careless' mean? Week 7
Put the two words together: sun + flower. Grammar and spelling

Standards Addressed

RI.2.6 W.2.7 W.2.8 +2 more

Activities

15 min

Shared Reading

Read 'The Very Hungry Caterpillar' by Eric Carle. Ask, 'Both books have a caterpillar that becomes a butterfly. Did Eric Carle write to explain, or to entertain?' Point to the Saturday page with the cake and pickle and ask whether a real caterpillar eats those.

The Very Hungry Caterpillar by Eric CarleMonarch Butterfly by Gail Gibbons

10 min

Mini-Lesson

Add 'to entertain' as a fourth purpose on the anchor chart. Make a T-chart: 'Monarch Butterfly' (real facts, labels, tells how) and 'The Very Hungry Caterpillar' (made up, fun, a story with a pattern). Explain that knowing the purpose helps you decide whether to trust a book for research.

chart papermarker

15 min

Independent Reading

Your child reads a second source on the research topic (another library book, a magazine article, or a printed encyclopedia page for kids) for 12 minutes and marks two facts that were not in the first source with sticky notes.

second source on the research topicsticky notespencil

15 min

Writing Workshop

Your child adds notes from the second source to the question pages, writing the second source's title at the top in a different color. Then they draw a star next to any fact that appears in both sources, and you explain that two sources agreeing makes a fact more trustworthy.

folderplain paperpencilcolored pencils

10 min

Word Study

Teach that compound words are two base words joined, and each part gives a clue to the meaning. Read and split: butterfly, sunflower, honeybee, ladybug, raindrop, treetop, grasshopper, earthworm, dragonfly, milkweed. Your child draws a quick picture of the two parts of 'grasshopper' and 'sunflower' and explains which one is a fair clue.

index cardsmarkerplain papercrayons

Materials Needed

The Very Hungry Caterpillar by Eric CarleMonarch Butterfly by Gail Gibbonschart papermarkersecond source on the research topicsticky notespencilfolderplain papercolored pencilsindex cardscrayons

Related Resources

ELA Worksheets (Weeks 9-12)ELA Answer Key (Weeks 9-12)

Science

Students investigate how seeds travel by wind, water, and animals by testing seed models (2-LS2-2).

Done

Standards Addressed

2-LS2-2

Activities

5 min

Review

Look at the seeds taped in Monday's notebook with a hand lens. Ask, 'What did the seed have that helped it stick?' Read the hitchhiker pages of 'Flip, Float, Fly: Seeds on the Move' by JoAnn Early Macken.

notebookhand lensFlip, Float, Fly: Seeds on the Move by JoAnn Early Macken

20 min

Deeper Investigation: Wind, Water, or Animal?

Test three real seeds: a dandelion puff or maple 'helicopter' for wind, a dried bean and a sunflower seed for water, and a burr or the sock seeds for animal. Wind test: drop each seed from shoulder height in front of a fan and measure how far it travels with a ruler. Water test: float each in a bowl of water for 2 minutes and note sink or float. Animal test: press each against a fuzzy sock and see if it stays. Record results in a three-row chart.

dandelion or maple seeddried beansunflower seedburr or sock seedsfanrulerbowl of waterfuzzy socknotebook

5 min

Data Discussion

Ask, 'Which seed went farthest in the wind? What shape helped it? Which seed would a bird or squirrel carry?' Your child circles the best traveler in each row.

notebookpencil

Materials Needed

notebookhand lensFlip, Float, Fly: Seeds on the Move by JoAnn Early Mackendandelion or maple seeddried beansunflower seedburr or sock seedsfanrulerbowl of waterfuzzy sockpencil

Related Resources

Science Worksheets (Weeks 9-12)Science Answer Key (Weeks 9-12)

Today's Practice

One page for your child for each lesson. Answers are for grown-ups.

Math practice · Week 10 · Wednesday

I can find 10 or 100 more or less, even when a hundred changes.

Look: four corners for 473

Top: 10 more is 483. Bottom: 10 less is 463.
Right: 100 more is 573. Left: 100 less is 373.
Watch the tens digit. If it is 9 or 0, the hundreds can change too.

Do the four corners: 10 more, 10 less, 100 more, 100 less.

Four corners for 296
Four corners for 701
Four corners for 408

Solve in your head.

894 + 10 = ____
510 − 10 = ____
197 + 10 = ____
106 − 100 = ____

Challenge

Add a fifth corner: 20 more than 296.

How did it go? Great Okay Tricky

ELA practice · Week 10 · Wednesday

I can tell if an author wrote to teach or to entertain.

Look: teach or entertain?

A frog put on a hat and sang. That could not really happen. It is to entertain.
A frog catches bugs with its tongue. That is a real fact. It is to teach.

Read each sentence. Circle why the author wrote it.

A caterpillar ate a cake, a pickle and a hat.to teachto entertain
A caterpillar eats leaves and grows bigger.to teachto entertain
The butterfly put on boots and danced.to teachto entertain
Which kind of book would you use for research? Why?

Split each compound word into its two base words.

starfish
bluebird
seashell
footprint

How did it go? Great Okay Tricky

Science practice · Week 10 · Wednesday

I can test how seeds travel by wind, water and animals.

Test each seed. Record what happens.

Seed	Wind: how far?	Water: sink or float?	Animal: does it stick?

Which seed went farthest in the wind?
What shape helped it travel?

Think and write.

Which seed would stick to an animal's fur? Why?
Circle the best traveler in each row of your chart.

You need: a dandelion puff or maple seed, a dried bean and a sunflower seed, a burr or the seeds from your sock, a fan, a bowl of water, a ruler, a fuzzy sock

How did it go? Great Okay Tricky