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Because how could you not...

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Try to come up with a scenario where you would try to find what transition metal ions are present. This would make learning about transition metals more fun whilst also promoting some problem solving skills. For example do not tell the students what each compound is and instead let them try to find out what metal ions are present and THEN they know what colour compounds those ions form.

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Understanding shapes of molecules, the arrangement of atoms in space, and bond angles based on understanding the number of bonded pairs and lone pairs. These can be calculated using the Periodic Table.

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To try and show the limitations of the time they were produced and how they compare to the modern periodic table you could give each group (pair?) of students the precursors to the periodic table (e.g. Newland's octets) and Mendeleev's own version of the periodic table and ask them:
a) how are these elements grouped?
b) how does this compare to the periodic table we use today?
c) which one is most similar to the modern periodic table?

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Introducing chemical reactions and representing them by writing word equations. Use of molymods useful to help understand how the number of atoms don't change but their arrangement changes.
Scaffold for higher ability by encouraging chemical formulae equations and balancing.

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Developing the KS4 idea of shells and leading to orbitals and sub-shells (s, p, d, f). Visual aids such as videos and models would be very beneficial here. Quick quizzes such as an "orbital game" could be used to test their understanding of how many electrons can exist in the third energy level etc. This would help students when learning about electronic configurations.

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Give them the graphs showing ionisation energy or melting/boiling point etc. and ask them:

a) what does this show?
b) why MAY this happen?

This allows them to use prior knowledge of electron shells and the structure of atoms/ ions to try and determine on their own why these trends exist. It helps prepare them to analyse trends in data which is important.

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Use a similar model to show the formation of ions

WARNING: still could be chaos

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Start by getting the pupils to model the atom of a simple element, e.g. lithium, slowly build this further with each element getting more pupils involved.
You could be the nucleus and students are the electrons. This is a way of visualising the shells and could be used to introduce how many electrons fill each shell.
WARNING: could be chaotic.

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Predict the position of an element in the periodic table based on information about its physical and chemical properties. Choose elements for different uses from their position in the periodic table. Use data about the properties of elements to find similarities, patterns and anomalies.

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Use this resource to encourage students to research different facts about the Periodic Table or particular elements, based on history, state at room temperature, visual elements images.

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The Royal Society of Chemistry's interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table. Click the tabs at the top to explore each section. Use the buttons above to change your view of the periodic table and view Murray Robertson's stunning Visual Elements artwork. Click each element to read detailed information.

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Periodic Table - Royal Society of Chemistry

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Interactive periodic table with element scarcity (SRI), discovery dates, melting and boiling points, group, block and period information.

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Introduce each group separately (e.g. alkali metals/halogens). Build the periodic table as you go, adding each group as you go. Could be in books or as a class model.

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Those who are higher ability could colour the transition metals, basic metals and the metalloids as separate colours so they have a more in depth version of the periodic table.

For those who are lower ability you could simplify tthis to the metals and non-metals.

There are a range of ways to make the task easier or harder depending on the students.

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Practicals and Demonstrations that show elements or compounds forming (RSC Resource)

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Emphasising that elements are found in the Periodic Table, not compounds or mixtures.

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A periodic table colouring task! Colour in the alkali metals red, the alkaline earth metals orange, transition metals and basic metals yellow (or separate colours) and the non-metals blue