Students learn best when basic skills are taught in a vital challenging context that makes the skills meaningful.The very thing that keeps students from achieving in these areas is the dry irrelevant teaching strategies we often employ, especially with students who most need real challenges.Once they are able to manipulate the cards into the correct sequence, they are asked to do a similar sequencing activity using fossil pictures printed on rock layer cards.
Use this information to sequence the cards in a vertical stack of fossils in rock strata.
Arrange them from oldest to youngest with the oldest layer on the bottom.
Since this card has a common letter with the first card, it must go on top of the TC card.
The fossils represented by the letters on this card are younger than the T or C fossils on the TC card and indicates fossils in the oldest rock layer. When done you should have a vertical stack of cards with the top card representing the youngest fossils of this rock sequence and the TC card at the bottom of the stack indicating the oldest fossils.
If the letters T and C represent fossils in the oldest rock layer, they are the oldest fossils, or the first fossils formed in the past for this sequence of rock layers.