# Pre-K Math at Home

Welcome! We’ll update this page every weekday with a new math activity. Many of the activities will be fun for students of all ages so that you can do them as a family. The following day, we’ll share examples of how other people did the activity so you can check your work and stretch your thinking.

The resources on this page focus on the major work for Pre-K:

• Counting to 20, and reading and writing numbers to 10

• Counting and making collections of 1–10 objects

• Sorting objects by traits like color, shape, number, and size

• Finding, describing, and making patterns

• Finding, naming, describing, and building things with shapes

## Math & Game Tools

DIY spinners, origami dice, and more!

# Activity of the Day

Check the archive to see past activities with sample solutions.

Do you remember my black and yellow striped caterpillar, Camilla? Well, she went missing a few weeks ago. I couldn’t find her anywhere. I finally decided that she must have crawled away to make the chrysalis in which she would become a beautiful butterfly.

When she reappeared in the garden the other day, I was surprised to discover that Camilla hadn’t turned into a butterfly at all. She had become a moth!

Not only that, but her pattern of black and yellow stripes was transformed into black and red wings that matched perfectly. Do you see how she has exactly the same number of spots on both wings, in exactly the same places? And look at the red stripe running along the edge of each wing!

When something matches perfectly on both sides like this moth, we say that it’s symmetrical.

Try making a symmetrical butterfly (or moth) of your own. Here’s how:

1. Get someone to help you draw a large and simple butterfly outline on a piece of paper. Note: If you have a printer at home, you can print out a butterfly outline instead of drawing it yourself.

2. Now comes the fun part! Find some tiny things and arrange them on both sides of your butterfly so the two wings match exactly. You could use: beads, buttons, craft supplies such as pompoms, little pieces of ribbon, etc., or bits of colored paper or gift wrap.

3. When you have a symmetrical design you really like, glue everything into place.

4. Variations: Color in the butterfly’s wings so they’re symmetrical and match on both sides. Use stickers. Make a symmetrical butterfly with someone in your family. Draw something on your side of the butterfly. Have your partner draw exactly the same thing in exactly the same place on their side of the butterfly. Keep taking turns until you’ve made a very fancy butterfly.

## Activities of the Day

Want more Activities of the Day? Check out the archive for past activities, including sample responses.

## Story Collections

Math-rich stories in English and Spanish, in PDF and ePub formats, featuring counting and numeral recognition, sequencing, shapes, and very early addition and subtraction.

## Family Games

Math games for families to play together at home with materials and tools easily made, downloaded, or found online.

## Behind the Scenes

A special message to you!

Today, I decided to sort my buttons, but not all of them because there are way too many. So I took some of them out of the box and put the rest away.

When I sort things, I find the ones that are alike and put them together. Which buttons do YOU think belong together?

Tell someone in your family, and ask them what they think. I thought of three different ways to sort my buttons. See if you can figure out how I sorted them each time.