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![Image of the green Small Feel Nano magnet sheets](https://nisenet.org/sites/default/files/styles/curated_list_large/public/ToolsSPM_magnet_Dec08.jpg?itok=QnIz66S2)
Exploring Tools - Special Microscopes
In this activity, learners use a flexible magnet as a model for a scanning probe microscope.
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![facilitator and young learner use a height chart set in nanometers](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/20100815GH_1826.jpg?h=2e3eca71&itok=Nxmp6Uur)
Exploring Size - Measure Yourself
In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.
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Sizing Things Down card game
In this activity, learners compete against each other (or the activity facilitator) to organize their hand of cards into lists of objects from largest to smallest.
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![The ferrofluid activity components including the signs, guides, tubes of ferrofluid, and magnets.](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/ferrofluid.jpg?h=b7e224f1&itok=b54gJpf1)
Exploring Materials - Ferrofluid
In this activity, learners investigate the properties of ferrofluid and magnetic black sand, learning that the surprising difference in the behavior of these two materials is due to size.
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![image of a handprint that was created using heat sensitive liquid crystals suspended in thermal paper](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/MatsLC_handprint_Dec08.jpg?h=c210faf1&itok=6YeuUVKY)
Exploring Materials - Liquid Crystals
In this activity, learners will investigate the properties of a heat sensitive liquid crystal and make their own liquid crystal sensor to take home.
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![Learner cuts a paper ruler in half](https://nisenet.org/sites/default/files/styles/curated_list_large/public/MeasRuler_cutting_Dec08.jpg?itok=8nbtQ_lJ)
Exploring Size - Tiny Ruler
In this activity, learners investigating just how small a billionth of a meter is by repeatedly cutting a paper ruler in half.
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![A facilitator holds a bottle while a learner wafts a scent to her nose](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/ExSci_Chem_20180530_1735.jpg?h=265e640d&itok=moVmabyK)
Exploring Size - Scented Solutions
In this activity, learners sniff a series of diluted scent solutions to discover they can smell nano-sized particles they can't see.
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![Surface Area activity components including signs, activity materials and guides.](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/surface_area.jpg?h=b7796557&itok=ECS2dtXS)
Exploring Properties - Surface Area
In this activity, learners compare the reaction rate of an effervescent antacid tablet that is broken in half with one that is broken into many pieces.
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![young learners placing mini teacup in water to see what happens](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-01/20151009_1294.jpg?h=265e640d&itok=ioZOtzL2)
Exploring Forces - Gravity
In this activity, learners will discover that size can affect the way materials like water behave.
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![Viewing the Unexpected Properties exhibit from the right](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/1651/v2.0_unexpected_properties_1.jpg?h=0a43958e&itok=QP3LANzP)
Unexpected Properties exhibit
Quantum Dots exhibit that was part of the Nanotechnology: What's the Big Deal? exhibition that demonstrates how materials at the nanoscale can have unexpected properties.
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