Posts Tagged ‘hands-on science’

Bible Rocks and Minerals

Sunday, November 13th, 2022

Bible-Rocks-and-Minerals

I’ve recently noticed many places in Scripture that mention rocks and minerals. Years ago we purchased The Geology of Israel and Rocks and Minerals of the Bible from Northwest Treasures, which is a set of rocks and minerals that is specific to the Scriptures and to Israel, along with a binder with information about the rocks contained in the set. My kids gathered around to look at each rock and mineral to better understand, in a tangible way, the rocks referred to in Scripture.

Today I’m going to show you my two favorite rocks and minerals passages in Scripture: the precious stones in the Levitical priest’s garments and the precious stones referred to in the New Jerusalem that descends from heaven in the book of Revelation.

Precious Stones of Levitical Priest

I’ve always been fascinated by the precious stones in the high priest’s breastplate, which is described in Exodus 28:17-20. These stones were to be put into the beautiful woven garment that was for Aaron, the high priest. Each one of these rocks represents a different tribe of Israel, starting with Ruben (the oldest), all the way down to Benjamin (the youngest.)

We are going to look at some of these rocks and minerals today:

You can also do a craft for the breastplate of the high priest with shiny bronze paper and plastic gems to represent each color of the precious stones listed in Scripture. I give instructions on how to do this craft here:

breastplate-high-priest-craft

Precious Stones from Revelation

My other favorite Scripture passage for the study of rocks and minerals is the New Jerusalem coming down out of heaven in Revelation 21:10-21.

The New Jerusalem is in the shape of a square, with three gates on each of the four sides. Each gate is an enormous pearl, and under each gate is a foundation stone. Each foundation stone is decorated with every kind of precious stone. These stones are mentioned: jasper, sapphire, chalcedony, emerald, sardonyx, sardius, chrysolite, beryl, topaz, chrysoprase, jacinth, and amethyst. Let me show you:

The length and width of the New Jerusalem is 1,500 miles across, so you have 500 miles for each foundation stone! Those are enormous foundation stones, one huge rock under each gate, holding up the walls of the New Jerusalem. The foundation stones are adorned with beautiful designs (maybe mosaics!) with only precious stones that glitter and sparkle in the light. God will be the Light of the city. You can see the precious stones adorning each foundation stone because the ground is transparent gold like glass! So the streets are clear, but they are shimmering because they are made from gold rather than sand, which is what window glass is made of. WOW.

We made a model of the New Jerusalem:

If you enjoy hands-on Bible activities, you will love Using Simple Costumes and Props to Teach the Bible, as well as the Bible section of the Unit Study Treasure Vault, which contains hands-on activities for every book of the Bible!

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$200 Christmas Giveaway!

Christmas-Giveaway

Once again, I have teamed up with some generous bloggers for the 9th annual Christmas Blessings Giveaway to bless FIVE families this year. In the past we have had two winners for this giveaway, but this year we wanted to give to even more families – we are giving away $200 gift cards to 5 families! Each winner will get a $200 gift card to wherever they choose – a restaurant, clothing store, grocery store, online retailer – any place that offers gift cards!

There are lots of entry options in the Rafflecopter form below – the more you enter, the better your chance of winning! I know it can seem tedious and time consuming to go through all the entries, but isn’t a chance at $200 worth it? I think it is! Plus, all of these amazing bloggers donated their own money towards the prizes, so this giveaway wouldn’t be possible without them. I hope you’ll take the time to check out each one. Who knows, maybe you will find some new blogs to follow.

The giveaway will run from Monday, November 14th through Wednesday, November 23rd (ends at 11:59pm EST). Winner will be notified by email shortly after the giveaway ends and will have 48 hours to respond to claim the prize or another winner will be drawn. By entering this giveaway, you agree to be added to the email lists of the participating bloggers. Please be sure to read the Rafflecopter terms and conditions upon entering.

a Rafflecopter giveaway

How to Grow a Hydroponic Herb Garden

Tuesday, July 12th, 2022

hydroponic-herb-garden

The plants in this hydroponic garden grow directly in water… with no soil. Every two weeks, the little green light on the bottom turns red to remind you to put two capfulls of plant food into the water. Other than that, you just top off the distilled water each day, and you get lucious herbs. Simple.

herbs-in-hydroponic-garden

My husband got me this one from Costco, but you can get them various places and under different brands. What they have in common is that they have pods that you place into the water. These pods contain seeds which germinate when placed in water under a grow light. The grow light on this model (Aerogarden) is adjustable. You place it lower when the seeds are germinating, and as they grow taller, you raise the light higher.

How to Set Up Your Hydroponic Garden

Here is a tutorial on how to use your hydroponic herb garden:

As you can see, you fill the container with distilled water, so as not to crust over the system with harsh chemicals from tapwater. Then put the lid on, and place the herb pods into the circles.

herb-pods-for-hydroponic-garden

Place the little “greenhouse” over each pod until they sprout. Then remove the “greenhouse,” allowing the plant to grow taller.

tomato-pods-in-water

When the herbs are so tall that they touch the light, they need to be trimmed or transplanted to another container or outside.

tomatoes-hydroponic-garden

So far we have grown herbs (including basil, parsley, and mint) and some cherry tomatoes. It’s fun to add some greenery to your home, and to have herbs available to clipping and throw into your cooking!

Umbrella Star Chart

Saturday, March 12th, 2022

umbrella-star-chart

One super fun and relatively easy hands-on activitiy you can do with your kids when you are studying astronomy is to create this umbrella star chart. The person who originally created this activity is H. A. Ray, who wrote a groundbreaking astronomy book called The Stars. He took the complicated constellations and made simplified stick figures out of them, making the constellations more of a dot-to-dot rather than a complicated figure for each star pattern. This is a great activity to do to understand how the night sky rotates counterclockwise as the earth rotates, causing the illusion of the stars spinning around a central point, which is the north star.

The center of your umbrella (the handle) will be the north star. All the other constellations rotate around that star. So you can start with Cassiopeia, which looks like a W:

Take five silver star stickers, and place them on the umbrella in the form of a W to create the shape for the constellation Cassiopeia. Then spin the umberlla to the opposite side of the sky, and create the Big Dipper:

constellation-stickers-on-umbrella

After placing those two constellations, spin the umberlla, and you will see how the sky rotates at night. This is why the constellations are not always seen in the same places. However, if you learn to always find Cassiopeia (the W), you will always be able to find the Big Dipper on the opposite side of the sky. Isn’t that cool?

Over the years, you can learn more and more constellations. You can add as many constellations as you want to your umbrella star chart. If you make the constellations smaller, you can fit in quite a few. We just placed some basic ones to give you the idea. The sky is the limit on what you can create on this star chart!

star-chart-on-umbrella

A great activity to do right after making this umbrella star chart is to get in your car and drive away from the city one clear night, to go looking for these constellations:

If you want to see some hands-on activities for elementary astronomy, here you go:

If you want to see our high school astronomy curriculum and some fun field trips we did, go here:

We have done so many more activites for astronomy over the years, which we have inside the Astronomy Unit Study article in the Unit Study Treasure Vault. Hope you enjoyed this activity as much as we did!

Dry Ice Volcano Cake

Monday, September 4th, 2017

dry-ice-volcano-cake

Look at this super cool dry ice volcano cake we had for my son’s natural disasters themed birthday party! I was brainstorming different ways to make a volcano cake, and I’ve never seen this done before, so I thought it would be fun to make. I wasn’t disappointed, and it was fairly easy to make!

Start by baking two cake boxes, for a total of four round cakes. Cool the cakes and place them in the fridge.

Put foil on a square piece of wood or cardboard, and tape the back. Up-end one round cake onto the center of the foil. Grab a chemistry flask and cut a circle with a knife around the edge of the flask. Remove the small circle of cake, and place the flask inside.

inside-volcano-cake

Cut circles into the other cakes, and slide them like stacking rings on top of the flask until the entire flask is hidden. If you have a taller flask, you will have to bake more cakes. This will result in a taller volcano.

chocolate-volcano

Place the entire stack in the fridge to cool. Then you are ready to sculpt the volcano. Look at the video demonstration to see how I shaped it:

You can do whatever you want with the scraps of chocolate cake that you cut off the volcano. At this point, you want to place the cake back into the fridge before frosting it.

carving-volcano-cake

Frost the cake with chocolate frosting, spinning the cake to get the icing to be smooth. You can cover up any mistakes you made with the icing.

frosting-volcano-cake

Feel free to poke in plastic palm trees at the bottom of your volcano to add authenticity. This was my husband’s idea, since they were left over from a Hawaiian themed party we did for my daughter years ago. You can buy plastic palm trees at a party store.

make-a-volcano-cake

Pour hot water into the volcano. Plop dry ice chunks into the volcano. (You can buy dry ice at most grocery stores, and it’s inexpensive.) Now you will see the volcano smoking downward in an incredible way!

erupting-volcano-cake

Make sure to watch the video above to see how cool this dry ice volcano cake turned out!